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showbox-public-14
showbox-public-14 / ffmpeg-doc deb
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<div class="title">transcoding.c</div> </div>
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<a href="transcoding_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2010 Nicolas George</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Copyright (c) 2011 Stefano Sabatini</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Copyright (c) 2014 Andrey Utkin</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a copy</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * of this software and associated documentation files (the "Software"), to deal</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * in the Software without restriction, including without limitation the rights</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * copies of the Software, and to permit persons to whom the Software is</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * furnished to do so, subject to the following conditions:</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * The above copyright notice and this permission notice shall be included in</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * all copies or substantial portions of the Software.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * THE SOFTWARE.</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"></span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * @file</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * API example for demuxing, decoding, filtering, encoding and muxing</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * @example transcoding.c</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <<a class="code" href="avcodec_8h.html">libavcodec/avcodec.h</a>></span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include <<a class="code" href="avformat_8h.html">libavformat/avformat.h</a>></span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include <<a class="code" href="avfiltergraph_8h.html">libavfilter/avfiltergraph.h</a>></span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include <<a class="code" href="buffersink_8h.html">libavfilter/buffersink.h</a>></span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <<a class="code" href="buffersrc_8h.html">libavfilter/buffersrc.h</a>></span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <<a class="code" href="opt_8h.html">libavutil/opt.h</a>></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <<a class="code" href="pixdesc_8h.html">libavutil/pixdesc.h</a>></span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div>
<div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="transcoding_8c.html#a24170971d926c1359c289f2515dec3d7"> 39</a></span> <span class="keyword">static</span> <a class="code" href="structAVFormatContext.html">AVFormatContext</a> *<a class="code" href="transcoding_8c.html#a24170971d926c1359c289f2515dec3d7">ifmt_ctx</a>;</div>
<div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="transcoding_8c.html#aad50129a22f90b00b5d5cc7551175093"> 40</a></span> <span class="keyword">static</span> <a class="code" href="structAVFormatContext.html">AVFormatContext</a> *<a class="code" href="transcoding_8c.html#aad50129a22f90b00b5d5cc7551175093">ofmt_ctx</a>;</div>
<div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="structFilteringContext.html"> 41</a></span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structFilteringContext.html">FilteringContext</a> {</div>
<div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="structFilteringContext.html#a4476c9e6fb492172c909ae4a47c47233"> 42</a></span>  <a class="code" href="structAVFilterContext.html">AVFilterContext</a> *<a class="code" href="structFilteringContext.html#a4476c9e6fb492172c909ae4a47c47233">buffersink_ctx</a>;</div>
<div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="structFilteringContext.html#a25c500d3728df3a9f904e6d86cf55f11"> 43</a></span>  <a class="code" href="structAVFilterContext.html">AVFilterContext</a> *<a class="code" href="structFilteringContext.html#a25c500d3728df3a9f904e6d86cf55f11">buffersrc_ctx</a>;</div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="structFilteringContext.html#aaf35e44d4e6100095b1db444e2d316cd"> 44</a></span>  <a class="code" href="structAVFilterGraph.html">AVFilterGraph</a> *<a class="code" href="structFilteringContext.html#aaf35e44d4e6100095b1db444e2d316cd">filter_graph</a>;</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> } <a class="code" href="structFilteringContext.html">FilteringContext</a>;</div>
<div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="transcoding_8c.html#aac21c1c8f68cdafd001a6a13dc4d7fb7"> 46</a></span> <span class="keyword">static</span> <a class="code" href="structFilteringContext.html">FilteringContext</a> *<a class="code" href="transcoding_8c.html#aac21c1c8f68cdafd001a6a13dc4d7fb7">filter_ctx</a>;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div>
<div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="transcoding_8c.html#abd04bf1a933d4d2698482f4949c61fed"> 48</a></span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="transcoding_8c.html#abd04bf1a933d4d2698482f4949c61fed">open_input_file</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *filename)</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> {</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  ifmt_ctx = NULL;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">if</span> ((ret = <a class="code" href="group__lavf__decoding.html#ga31d601155e9035d5b0e7efedc894ee49">avformat_open_input</a>(&ifmt_ctx, filename, NULL, NULL)) < 0) {</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Cannot open input file\n"</span>);</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  }</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">if</span> ((ret = <a class="code" href="group__lavf__decoding.html#gad42172e27cddafb81096939783b157bb">avformat_find_stream_info</a>(ifmt_ctx, NULL)) < 0) {</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Cannot find stream information\n"</span>);</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  }</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">for</span> (i = 0; i < ifmt_ctx-><a class="code" href="structAVFormatContext.html#a0b748d924898b08b89ff4974afd17285">nb_streams</a>; i++) {</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <a class="code" href="structAVStream.html">AVStream</a> *stream;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <a class="code" href="structAVCodecContext.html">AVCodecContext</a> *codec_ctx;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  stream = ifmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[i];</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  codec_ctx = stream-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">/* Reencode video & audio and remux subtitles etc. */</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">if</span> (codec_ctx-><a class="code" href="structAVCodecContext.html#a3f99ca3115c44e6d7772c9384faf15e6">codec_type</a> == <a class="code" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48ac1a46f59be5c6c2d3412ab172d6b8cf5">AVMEDIA_TYPE_VIDEO</a></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  || codec_ctx-><a class="code" href="structAVCodecContext.html#a3f99ca3115c44e6d7772c9384faf15e6">codec_type</a> == <a class="code" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48a7b4e33b8f30ac94d34ce8d9f7c33927a">AVMEDIA_TYPE_AUDIO</a>) {</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">/* Open decoder */</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  ret = <a class="code" href="group__lavc__core.html#ga11f785a188d7d9df71621001465b0f1d">avcodec_open2</a>(codec_ctx,</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <a class="code" href="group__lavc__decoding.html#ga19a0ca553277f019dd5b0fec6e1f9dca">avcodec_find_decoder</a>(codec_ctx-><a class="code" href="structAVCodecContext.html#adc5f65d6099fd8339c1580c091777223">codec_id</a>), NULL);</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Failed to open decoder for stream #%u\n"</span>, i);</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  }</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  }</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <a class="code" href="group__lavf__misc.html#gae2645941f2dc779c307eb6314fd39f10">av_dump_format</a>(ifmt_ctx, 0, filename, 0);</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> }</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="transcoding_8c.html#ab6c33edf9a42e2f71594a7cdc6276407"> 86</a></span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="transcoding_8c.html#ab6c33edf9a42e2f71594a7cdc6276407">open_output_file</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *filename)</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> {</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <a class="code" href="structAVStream.html">AVStream</a> *out_stream;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <a class="code" href="structAVStream.html">AVStream</a> *in_stream;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <a class="code" href="structAVCodecContext.html">AVCodecContext</a> *<a class="code" href="filtering__audio_8c.html#ac2bf6798f37e95d3d2ff2d44e4ab3c12">dec_ctx</a>, *enc_ctx;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <a class="code" href="structAVCodec.html">AVCodec</a> *encoder;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  ofmt_ctx = NULL;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <a class="code" href="avformat_8h.html#a6ddf3d982feb45fa5081420ee911f5d5">avformat_alloc_output_context2</a>(&ofmt_ctx, NULL, NULL, filename);</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">if</span> (!ofmt_ctx) {</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Could not create output context\n"</span>);</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> <a class="code" href="group__lavu__error.html#ga4ebaa288c7684a26a591c501208910e4">AVERROR_UNKNOWN</a>;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  }</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">for</span> (i = 0; i < ifmt_ctx-><a class="code" href="structAVFormatContext.html#a0b748d924898b08b89ff4974afd17285">nb_streams</a>; i++) {</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  out_stream = <a class="code" href="group__lavf__core.html#gadcb0fd3e507d9b58fe78f61f8ad39827">avformat_new_stream</a>(ofmt_ctx, NULL);</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">if</span> (!out_stream) {</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Failed allocating output stream\n"</span>);</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">return</span> <a class="code" href="group__lavu__error.html#ga4ebaa288c7684a26a591c501208910e4">AVERROR_UNKNOWN</a>;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  }</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  in_stream = ifmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[i];</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  dec_ctx = in_stream-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  enc_ctx = out_stream-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">if</span> (dec_ctx-><a class="code" href="structAVCodecContext.html#a3f99ca3115c44e6d7772c9384faf15e6">codec_type</a> == <a class="code" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48ac1a46f59be5c6c2d3412ab172d6b8cf5">AVMEDIA_TYPE_VIDEO</a></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  || dec_ctx-><a class="code" href="structAVCodecContext.html#a3f99ca3115c44e6d7772c9384faf15e6">codec_type</a> == <a class="code" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48a7b4e33b8f30ac94d34ce8d9f7c33927a">AVMEDIA_TYPE_AUDIO</a>) {</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="comment">/* in this example, we choose transcoding to same codec */</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  encoder = <a class="code" href="group__lavc__encoding.html#ga9f820c481615c3a02d0407bac0bdbf25">avcodec_find_encoder</a>(dec_ctx-><a class="code" href="structAVCodecContext.html#adc5f65d6099fd8339c1580c091777223">codec_id</a>);</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">if</span> (!encoder) {</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#ga96970a2980bf6ad28cd403e7dc52d6c5">AV_LOG_FATAL</a>, <span class="stringliteral">"Necessary encoder not found\n"</span>);</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">return</span> <a class="code" href="group__lavu__error.html#gaa6e5781e75b15ce44b0baea170c98a45">AVERROR_INVALIDDATA</a>;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  }</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="comment">/* In this example, we transcode to same properties (picture size,</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"> * sample rate etc.). These properties can be changed for output</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> * streams easily using filters */</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">if</span> (dec_ctx-><a class="code" href="structAVCodecContext.html#a3f99ca3115c44e6d7772c9384faf15e6">codec_type</a> == <a class="code" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48ac1a46f59be5c6c2d3412ab172d6b8cf5">AVMEDIA_TYPE_VIDEO</a>) {</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  enc_ctx-><a class="code" href="structAVCodecContext.html#a0449afd803eb107bd4dbc8b5ea22e363">height</a> = dec_ctx-><a class="code" href="structAVCodecContext.html#a0449afd803eb107bd4dbc8b5ea22e363">height</a>;</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  enc_ctx-><a class="code" href="structAVCodecContext.html#a0d8f46461754e8abea0847dcbc41b956">width</a> = dec_ctx-><a class="code" href="structAVCodecContext.html#a0d8f46461754e8abea0847dcbc41b956">width</a>;</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  enc_ctx-><a class="code" href="structAVCodecContext.html#a5252d34fbce300228d4dbda19a8c3293">sample_aspect_ratio</a> = dec_ctx-><a class="code" href="structAVCodecContext.html#a5252d34fbce300228d4dbda19a8c3293">sample_aspect_ratio</a>;</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="comment">/* take first format from list of supported formats */</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  enc_ctx-><a class="code" href="structAVCodecContext.html#a0425c77b3d06d71e5db88b1d7e1b37f2">pix_fmt</a> = encoder-><a class="code" href="structAVCodec.html#ac2b97bd3c19686025e1b7d577329c250">pix_fmts</a>[0];</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="comment">/* video time_base can be set to whatever is handy and supported by encoder */</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  enc_ctx-><a class="code" href="structAVCodecContext.html#ab7bfeb9fa5840aac090e2b0bd0ef7589">time_base</a> = dec_ctx-><a class="code" href="structAVCodecContext.html#ab7bfeb9fa5840aac090e2b0bd0ef7589">time_base</a>;</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  enc_ctx-><a class="code" href="structAVCodecContext.html#a8ff0b000c463361e234af48d03aadfc0">sample_rate</a> = dec_ctx-><a class="code" href="structAVCodecContext.html#a8ff0b000c463361e234af48d03aadfc0">sample_rate</a>;</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  enc_ctx-><a class="code" href="structAVCodecContext.html#aeb08c575a79eb84fc4155dda88f46c06">channel_layout</a> = dec_ctx-><a class="code" href="structAVCodecContext.html#aeb08c575a79eb84fc4155dda88f46c06">channel_layout</a>;</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  enc_ctx-><a class="code" href="structAVCodecContext.html#ac1e6c2cd1269caa7570575725c682a49">channels</a> = <a class="code" href="group__channel__mask__c.html#gac95619abeb32e4a3daa18e3ff3419380">av_get_channel_layout_nb_channels</a>(enc_ctx-><a class="code" href="structAVCodecContext.html#aeb08c575a79eb84fc4155dda88f46c06">channel_layout</a>);</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="comment">/* take first format from list of supported formats */</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  enc_ctx-><a class="code" href="structAVCodecContext.html#a1bdba69ea111e2a9d03fdaa7a46a4c45">sample_fmt</a> = encoder-><a class="code" href="structAVCodec.html#aac19f4c45370f715412ad5c7b78daacf">sample_fmts</a>[0];</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  enc_ctx-><a class="code" href="structAVCodecContext.html#ab7bfeb9fa5840aac090e2b0bd0ef7589">time_base</a> = (<a class="code" href="structAVRational.html">AVRational</a>){1, enc_ctx-><a class="code" href="structAVCodecContext.html#a8ff0b000c463361e234af48d03aadfc0">sample_rate</a>};</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  }</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="comment">/* Third parameter can be used to pass settings to encoder */</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  ret = <a class="code" href="group__lavc__core.html#ga11f785a188d7d9df71621001465b0f1d">avcodec_open2</a>(enc_ctx, encoder, NULL);</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Cannot open video encoder for stream #%u\n"</span>, i);</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  }</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (dec_ctx-><a class="code" href="structAVCodecContext.html#a3f99ca3115c44e6d7772c9384faf15e6">codec_type</a> == <a class="code" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48afdadbd6c4f612c59f6b6c7c6f84fd347">AVMEDIA_TYPE_UNKNOWN</a>) {</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#ga96970a2980bf6ad28cd403e7dc52d6c5">AV_LOG_FATAL</a>, <span class="stringliteral">"Elementary stream #%d is of unknown type, cannot proceed\n"</span>, i);</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">return</span> <a class="code" href="group__lavu__error.html#gaa6e5781e75b15ce44b0baea170c98a45">AVERROR_INVALIDDATA</a>;</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="comment">/* if this stream must be remuxed */</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  ret = <a class="code" href="group__lavc__core.html#ga3933b21b9dcb9173df3e56673b7a7d76">avcodec_copy_context</a>(ofmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[i]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>,</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  ifmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[i]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>);</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Copying stream context failed\n"</span>);</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  }</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  }</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">if</span> (ofmt_ctx-><a class="code" href="structAVFormatContext.html#a20d80ac07e38ff5c268d15aaf2798b98">oformat</a>-><a class="code" href="structAVOutputFormat.html#aad55a00e728a020c1dcfaaf695320445">flags</a> & <a class="code" href="avformat_8h.html#ab203c7b734e9c31b7c37d34f6e2c6aef">AVFMT_GLOBALHEADER</a>)</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  enc_ctx-><a class="code" href="structAVCodecContext.html#abb01e291550fa3fb96188af4d494587e">flags</a> |= <a class="code" href="group__lavc__core.html#ga9ed82634c59b339786575827c47a8f68">AV_CODEC_FLAG_GLOBAL_HEADER</a>;</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> </div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  }</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <a class="code" href="group__lavf__misc.html#gae2645941f2dc779c307eb6314fd39f10">av_dump_format</a>(ofmt_ctx, 0, filename, 1);</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordflow">if</span> (!(ofmt_ctx-><a class="code" href="structAVFormatContext.html#a20d80ac07e38ff5c268d15aaf2798b98">oformat</a>-><a class="code" href="structAVOutputFormat.html#aad55a00e728a020c1dcfaaf695320445">flags</a> & <a class="code" href="avformat_8h.html#a752cce390d480521919aa5d8be24ac0b">AVFMT_NOFILE</a>)) {</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  ret = <a class="code" href="avio_8h.html#a371a670112abc5f3e15bc570da076301">avio_open</a>(&ofmt_ctx-><a class="code" href="structAVFormatContext.html#a1e7324262b6b78522e52064daaa7bc87">pb</a>, filename, <a class="code" href="avio_8h.html#a5c9308f296545a8f3b7687d277a6dabc">AVIO_FLAG_WRITE</a>);</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Could not open output file '%s'"</span>, filename);</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  }</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  }</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="comment">/* init muxer, write output file header */</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  ret = <a class="code" href="group__lavf__encoding.html#ga18b7b10bb5b94c4842de18166bc677cb">avformat_write_header</a>(ofmt_ctx, NULL);</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Error occurred when opening output file\n"</span>);</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  }</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> </div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> }</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> </div>
<div class="line"><a name="l00186"></a><span class="lineno"><a class="line" href="transcoding_8c.html#a54ad76df48ef886861a2f12bc7a9e7e4"> 186</a></span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="transcoding_8c.html#a54ad76df48ef886861a2f12bc7a9e7e4">init_filter</a>(<a class="code" href="structFilteringContext.html">FilteringContext</a>* fctx, <a class="code" href="structAVCodecContext.html">AVCodecContext</a> *<a class="code" href="filtering__audio_8c.html#ac2bf6798f37e95d3d2ff2d44e4ab3c12">dec_ctx</a>,</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <a class="code" href="structAVCodecContext.html">AVCodecContext</a> *enc_ctx, <span class="keyword">const</span> <span class="keywordtype">char</span> *filter_spec)</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> {</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordtype">char</span> args[512];</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordtype">int</span> ret = 0;</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <a class="code" href="structAVFilter.html">AVFilter</a> *buffersrc = NULL;</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <a class="code" href="structAVFilter.html">AVFilter</a> *buffersink = NULL;</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <a class="code" href="structAVFilterContext.html">AVFilterContext</a> *<a class="code" href="filtering__audio_8c.html#a8dce1714a267758c056947f105f66a82">buffersrc_ctx</a> = NULL;</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <a class="code" href="structAVFilterContext.html">AVFilterContext</a> *<a class="code" href="filtering__audio_8c.html#a5a75197a9aaa609af34cfc0d199acbda">buffersink_ctx</a> = NULL;</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <a class="code" href="structAVFilterInOut.html">AVFilterInOut</a> *outputs = <a class="code" href="group__lavfi.html#ga6e1c2931e15eb4283c59c6ccc8b83919">avfilter_inout_alloc</a>();</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <a class="code" href="structAVFilterInOut.html">AVFilterInOut</a> *inputs = <a class="code" href="group__lavfi.html#ga6e1c2931e15eb4283c59c6ccc8b83919">avfilter_inout_alloc</a>();</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <a class="code" href="structAVFilterGraph.html">AVFilterGraph</a> *<a class="code" href="filtering__audio_8c.html#a36c24d3c84d08e2f5a69e7368c211412">filter_graph</a> = <a class="code" href="group__lavfi.html#ga6c778454b86f845805ffd814b4ce51d4">avfilter_graph_alloc</a>();</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> </div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordflow">if</span> (!outputs || !inputs || !filter_graph) {</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  ret = <a class="code" href="group__lavu__error.html#gae4bb6f165973d09584e0ec0f335f69ca">AVERROR</a>(ENOMEM);</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  }</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">if</span> (dec_ctx-><a class="code" href="structAVCodecContext.html#a3f99ca3115c44e6d7772c9384faf15e6">codec_type</a> == <a class="code" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48ac1a46f59be5c6c2d3412ab172d6b8cf5">AVMEDIA_TYPE_VIDEO</a>) {</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  buffersrc = <a class="code" href="group__lavfi.html#ga9c7f1b28f648fc72f2822ff7f14a007a">avfilter_get_by_name</a>(<span class="stringliteral">"buffer"</span>);</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  buffersink = <a class="code" href="group__lavfi.html#ga9c7f1b28f648fc72f2822ff7f14a007a">avfilter_get_by_name</a>(<span class="stringliteral">"buffersink"</span>);</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">if</span> (!buffersrc || !buffersink) {</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"filtering source or sink element not found\n"</span>);</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  ret = <a class="code" href="group__lavu__error.html#ga4ebaa288c7684a26a591c501208910e4">AVERROR_UNKNOWN</a>;</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  }</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> </div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  snprintf(args, <span class="keyword">sizeof</span>(args),</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="stringliteral">"video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d"</span>,</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  dec_ctx-><a class="code" href="structAVCodecContext.html#a0d8f46461754e8abea0847dcbc41b956">width</a>, dec_ctx-><a class="code" href="structAVCodecContext.html#a0449afd803eb107bd4dbc8b5ea22e363">height</a>, dec_ctx-><a class="code" href="structAVCodecContext.html#a0425c77b3d06d71e5db88b1d7e1b37f2">pix_fmt</a>,</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  dec_ctx-><a class="code" href="structAVCodecContext.html#ab7bfeb9fa5840aac090e2b0bd0ef7589">time_base</a>.<a class="code" href="structAVRational.html#ae9a98c10a301c5e937095105b6f0fdb9">num</a>, dec_ctx-><a class="code" href="structAVCodecContext.html#ab7bfeb9fa5840aac090e2b0bd0ef7589">time_base</a>.<a class="code" href="structAVRational.html#aee46bdac67d965ac0a4204e753f910c3">den</a>,</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  dec_ctx-><a class="code" href="structAVCodecContext.html#a5252d34fbce300228d4dbda19a8c3293">sample_aspect_ratio</a>.<a class="code" href="structAVRational.html#ae9a98c10a301c5e937095105b6f0fdb9">num</a>,</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  dec_ctx-><a class="code" href="structAVCodecContext.html#a5252d34fbce300228d4dbda19a8c3293">sample_aspect_ratio</a>.<a class="code" href="structAVRational.html#aee46bdac67d965ac0a4204e753f910c3">den</a>);</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  ret = <a class="code" href="group__lavfi.html#gac0788a9ab6966dba9318b5d5c7524fea">avfilter_graph_create_filter</a>(&buffersrc_ctx, buffersrc, <span class="stringliteral">"in"</span>,</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  args, NULL, filter_graph);</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Cannot create buffer source\n"</span>);</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  }</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  ret = <a class="code" href="group__lavfi.html#gac0788a9ab6966dba9318b5d5c7524fea">avfilter_graph_create_filter</a>(&buffersink_ctx, buffersink, <span class="stringliteral">"out"</span>,</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  NULL, NULL, filter_graph);</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Cannot create buffer sink\n"</span>);</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  }</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> </div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  ret = <a class="code" href="group__opt__set__funcs.html#ga6c32155fd8a96bed2f8cf5ebc030dadf">av_opt_set_bin</a>(buffersink_ctx, <span class="stringliteral">"pix_fmts"</span>,</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  (uint8_t*)&enc_ctx-><a class="code" href="structAVCodecContext.html#a0425c77b3d06d71e5db88b1d7e1b37f2">pix_fmt</a>, <span class="keyword">sizeof</span>(enc_ctx-><a class="code" href="structAVCodecContext.html#a0425c77b3d06d71e5db88b1d7e1b37f2">pix_fmt</a>),</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <a class="code" href="group__avoptions.html#ga25801ba4fc9b5313eb33ec84e082dd72">AV_OPT_SEARCH_CHILDREN</a>);</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Cannot set output pixel format\n"</span>);</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  }</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (dec_ctx-><a class="code" href="structAVCodecContext.html#a3f99ca3115c44e6d7772c9384faf15e6">codec_type</a> == <a class="code" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48a7b4e33b8f30ac94d34ce8d9f7c33927a">AVMEDIA_TYPE_AUDIO</a>) {</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  buffersrc = <a class="code" href="group__lavfi.html#ga9c7f1b28f648fc72f2822ff7f14a007a">avfilter_get_by_name</a>(<span class="stringliteral">"abuffer"</span>);</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  buffersink = <a class="code" href="group__lavfi.html#ga9c7f1b28f648fc72f2822ff7f14a007a">avfilter_get_by_name</a>(<span class="stringliteral">"abuffersink"</span>);</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordflow">if</span> (!buffersrc || !buffersink) {</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"filtering source or sink element not found\n"</span>);</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  ret = <a class="code" href="group__lavu__error.html#ga4ebaa288c7684a26a591c501208910e4">AVERROR_UNKNOWN</a>;</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  }</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> </div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">if</span> (!dec_ctx-><a class="code" href="structAVCodecContext.html#aeb08c575a79eb84fc4155dda88f46c06">channel_layout</a>)</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  dec_ctx-><a class="code" href="structAVCodecContext.html#aeb08c575a79eb84fc4155dda88f46c06">channel_layout</a> =</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <a class="code" href="group__channel__mask__c.html#gacb84f3e93a583e1f84a5283162a606a2">av_get_default_channel_layout</a>(dec_ctx-><a class="code" href="structAVCodecContext.html#ac1e6c2cd1269caa7570575725c682a49">channels</a>);</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  snprintf(args, <span class="keyword">sizeof</span>(args),</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="stringliteral">"time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=0x%"</span>PRIx64,</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  dec_ctx-><a class="code" href="structAVCodecContext.html#ab7bfeb9fa5840aac090e2b0bd0ef7589">time_base</a>.<a class="code" href="structAVRational.html#ae9a98c10a301c5e937095105b6f0fdb9">num</a>, dec_ctx-><a class="code" href="structAVCodecContext.html#ab7bfeb9fa5840aac090e2b0bd0ef7589">time_base</a>.<a class="code" href="structAVRational.html#aee46bdac67d965ac0a4204e753f910c3">den</a>, dec_ctx-><a class="code" href="structAVCodecContext.html#a8ff0b000c463361e234af48d03aadfc0">sample_rate</a>,</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <a class="code" href="group__lavu__sampfmts.html#ga31b9d149b2de9821a65f4f5612970838">av_get_sample_fmt_name</a>(dec_ctx-><a class="code" href="structAVCodecContext.html#a1bdba69ea111e2a9d03fdaa7a46a4c45">sample_fmt</a>),</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  dec_ctx-><a class="code" href="structAVCodecContext.html#aeb08c575a79eb84fc4155dda88f46c06">channel_layout</a>);</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  ret = <a class="code" href="group__lavfi.html#gac0788a9ab6966dba9318b5d5c7524fea">avfilter_graph_create_filter</a>(&buffersrc_ctx, buffersrc, <span class="stringliteral">"in"</span>,</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  args, NULL, filter_graph);</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Cannot create audio buffer source\n"</span>);</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  }</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> </div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  ret = <a class="code" href="group__lavfi.html#gac0788a9ab6966dba9318b5d5c7524fea">avfilter_graph_create_filter</a>(&buffersink_ctx, buffersink, <span class="stringliteral">"out"</span>,</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  NULL, NULL, filter_graph);</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Cannot create audio buffer sink\n"</span>);</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  }</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> </div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  ret = <a class="code" href="group__opt__set__funcs.html#ga6c32155fd8a96bed2f8cf5ebc030dadf">av_opt_set_bin</a>(buffersink_ctx, <span class="stringliteral">"sample_fmts"</span>,</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  (uint8_t*)&enc_ctx-><a class="code" href="structAVCodecContext.html#a1bdba69ea111e2a9d03fdaa7a46a4c45">sample_fmt</a>, <span class="keyword">sizeof</span>(enc_ctx-><a class="code" href="structAVCodecContext.html#a1bdba69ea111e2a9d03fdaa7a46a4c45">sample_fmt</a>),</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <a class="code" href="group__avoptions.html#ga25801ba4fc9b5313eb33ec84e082dd72">AV_OPT_SEARCH_CHILDREN</a>);</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Cannot set output sample format\n"</span>);</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  }</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> </div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  ret = <a class="code" href="group__opt__set__funcs.html#ga6c32155fd8a96bed2f8cf5ebc030dadf">av_opt_set_bin</a>(buffersink_ctx, <span class="stringliteral">"channel_layouts"</span>,</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  (uint8_t*)&enc_ctx-><a class="code" href="structAVCodecContext.html#aeb08c575a79eb84fc4155dda88f46c06">channel_layout</a>,</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="keyword">sizeof</span>(enc_ctx-><a class="code" href="structAVCodecContext.html#aeb08c575a79eb84fc4155dda88f46c06">channel_layout</a>), <a class="code" href="group__avoptions.html#ga25801ba4fc9b5313eb33ec84e082dd72">AV_OPT_SEARCH_CHILDREN</a>);</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Cannot set output channel layout\n"</span>);</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  }</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> </div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  ret = <a class="code" href="group__opt__set__funcs.html#ga6c32155fd8a96bed2f8cf5ebc030dadf">av_opt_set_bin</a>(buffersink_ctx, <span class="stringliteral">"sample_rates"</span>,</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  (uint8_t*)&enc_ctx-><a class="code" href="structAVCodecContext.html#a8ff0b000c463361e234af48d03aadfc0">sample_rate</a>, <span class="keyword">sizeof</span>(enc_ctx-><a class="code" href="structAVCodecContext.html#a8ff0b000c463361e234af48d03aadfc0">sample_rate</a>),</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <a class="code" href="group__avoptions.html#ga25801ba4fc9b5313eb33ec84e082dd72">AV_OPT_SEARCH_CHILDREN</a>);</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Cannot set output sample rate\n"</span>);</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  }</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  ret = <a class="code" href="group__lavu__error.html#ga4ebaa288c7684a26a591c501208910e4">AVERROR_UNKNOWN</a>;</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  }</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span> </div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="comment">/* Endpoints for the filter graph. */</span></div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  outputs-><a class="code" href="structAVFilterInOut.html#a88afecac258f51aab7e9a9db9e7a4d58">name</a> = <a class="code" href="group__lavu__mem.html#ga7c352f4cff02184f005323691375fea9">av_strdup</a>(<span class="stringliteral">"in"</span>);</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  outputs-><a class="code" href="structAVFilterInOut.html#a3227857d0b955b639f4950d13e4e6f40">filter_ctx</a> = <a class="code" href="filtering__audio_8c.html#a8dce1714a267758c056947f105f66a82">buffersrc_ctx</a>;</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  outputs-><a class="code" href="structAVFilterInOut.html#a386ff90d40aa22f5612dd5eca734ed48">pad_idx</a> = 0;</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  outputs-><a class="code" href="structAVFilterInOut.html#af8c8cf9ffb650974d19e791f5bb7cf33">next</a> = NULL;</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span> </div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  inputs-><a class="code" href="structAVFilterInOut.html#a88afecac258f51aab7e9a9db9e7a4d58">name</a> = <a class="code" href="group__lavu__mem.html#ga7c352f4cff02184f005323691375fea9">av_strdup</a>(<span class="stringliteral">"out"</span>);</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  inputs-><a class="code" href="structAVFilterInOut.html#a3227857d0b955b639f4950d13e4e6f40">filter_ctx</a> = <a class="code" href="filtering__audio_8c.html#a5a75197a9aaa609af34cfc0d199acbda">buffersink_ctx</a>;</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  inputs-><a class="code" href="structAVFilterInOut.html#a386ff90d40aa22f5612dd5eca734ed48">pad_idx</a> = 0;</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  inputs-><a class="code" href="structAVFilterInOut.html#af8c8cf9ffb650974d19e791f5bb7cf33">next</a> = NULL;</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span> </div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="keywordflow">if</span> (!outputs-><a class="code" href="structAVFilterInOut.html#a88afecac258f51aab7e9a9db9e7a4d58">name</a> || !inputs-><a class="code" href="structAVFilterInOut.html#a88afecac258f51aab7e9a9db9e7a4d58">name</a>) {</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  ret = <a class="code" href="group__lavu__error.html#gae4bb6f165973d09584e0ec0f335f69ca">AVERROR</a>(ENOMEM);</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  }</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> </div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="keywordflow">if</span> ((ret = <a class="code" href="group__lavfi.html#ga34f4ff420bd58da6747a3ff1fbedd001">avfilter_graph_parse_ptr</a>(filter_graph, filter_spec,</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  &inputs, &outputs, NULL)) < 0)</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> </div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <span class="keywordflow">if</span> ((ret = <a class="code" href="group__lavfi.html#ga1896c46b7bc6ff1bdb1a4815faa9ad07">avfilter_graph_config</a>(filter_graph, NULL)) < 0)</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span> </div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="comment">/* Fill FilteringContext */</span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  fctx-><a class="code" href="structFilteringContext.html#a25c500d3728df3a9f904e6d86cf55f11">buffersrc_ctx</a> = <a class="code" href="filtering__audio_8c.html#a8dce1714a267758c056947f105f66a82">buffersrc_ctx</a>;</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  fctx-><a class="code" href="structFilteringContext.html#a4476c9e6fb492172c909ae4a47c47233">buffersink_ctx</a> = <a class="code" href="filtering__audio_8c.html#a5a75197a9aaa609af34cfc0d199acbda">buffersink_ctx</a>;</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  fctx-><a class="code" href="structFilteringContext.html#aaf35e44d4e6100095b1db444e2d316cd">filter_graph</a> = <a class="code" href="filtering__audio_8c.html#a36c24d3c84d08e2f5a69e7368c211412">filter_graph</a>;</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span> </div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span> end:</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <a class="code" href="group__lavfi.html#ga294500a9856260eb1552354fd9d9a6c4">avfilter_inout_free</a>(&inputs);</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <a class="code" href="group__lavfi.html#ga294500a9856260eb1552354fd9d9a6c4">avfilter_inout_free</a>(&outputs);</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span> </div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span> }</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span> </div>
<div class="line"><a name="l00335"></a><span class="lineno"><a class="line" href="transcoding_8c.html#a05c93a3c60f2fc12e3fb7884be1128d6"> 335</a></span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="transcoding_8c.html#a05c93a3c60f2fc12e3fb7884be1128d6">init_filters</a>(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span> {</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *filter_spec;</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  filter_ctx = <a class="code" href="group__lavu__mem.html#gab62b093b46dce5fe4e3e1d58bdb255da">av_malloc_array</a>(ifmt_ctx-><a class="code" href="structAVFormatContext.html#a0b748d924898b08b89ff4974afd17285">nb_streams</a>, <span class="keyword">sizeof</span>(*filter_ctx));</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="keywordflow">if</span> (!filter_ctx)</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="keywordflow">return</span> <a class="code" href="group__lavu__error.html#gae4bb6f165973d09584e0ec0f335f69ca">AVERROR</a>(ENOMEM);</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span> </div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="keywordflow">for</span> (i = 0; i < ifmt_ctx-><a class="code" href="structAVFormatContext.html#a0b748d924898b08b89ff4974afd17285">nb_streams</a>; i++) {</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  filter_ctx[i].<a class="code" href="structFilteringContext.html#a25c500d3728df3a9f904e6d86cf55f11">buffersrc_ctx</a> = NULL;</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  filter_ctx[i].<a class="code" href="structFilteringContext.html#a4476c9e6fb492172c909ae4a47c47233">buffersink_ctx</a> = NULL;</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  filter_ctx[i].<a class="code" href="structFilteringContext.html#aaf35e44d4e6100095b1db444e2d316cd">filter_graph</a> = NULL;</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="keywordflow">if</span> (!(ifmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[i]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>-><a class="code" href="structAVCodecContext.html#a3f99ca3115c44e6d7772c9384faf15e6">codec_type</a> == <a class="code" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48a7b4e33b8f30ac94d34ce8d9f7c33927a">AVMEDIA_TYPE_AUDIO</a></div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  || ifmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[i]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>-><a class="code" href="structAVCodecContext.html#a3f99ca3115c44e6d7772c9384faf15e6">codec_type</a> == <a class="code" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48ac1a46f59be5c6c2d3412ab172d6b8cf5">AVMEDIA_TYPE_VIDEO</a>))</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span> </div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span> </div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="keywordflow">if</span> (ifmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[i]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>-><a class="code" href="structAVCodecContext.html#a3f99ca3115c44e6d7772c9384faf15e6">codec_type</a> == <a class="code" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48ac1a46f59be5c6c2d3412ab172d6b8cf5">AVMEDIA_TYPE_VIDEO</a>)</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  filter_spec = <span class="stringliteral">"null"</span>; <span class="comment">/* passthrough (dummy) filter for video */</span></div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  filter_spec = <span class="stringliteral">"anull"</span>; <span class="comment">/* passthrough (dummy) filter for audio */</span></div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  ret = <a class="code" href="transcoding_8c.html#a54ad76df48ef886861a2f12bc7a9e7e4">init_filter</a>(&filter_ctx[i], ifmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[i]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>,</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  ofmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[i]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>, filter_spec);</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="keywordflow">if</span> (ret)</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  }</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span> }</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span> </div>
<div class="line"><a name="l00365"></a><span class="lineno"><a class="line" href="transcoding_8c.html#afb371e273a9d2e9cc0539a6453913533"> 365</a></span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="transcoding_8c.html#afb371e273a9d2e9cc0539a6453913533">encode_write_frame</a>(<a class="code" href="structAVFrame.html">AVFrame</a> *filt_frame, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> stream_index, <span class="keywordtype">int</span> *got_frame) {</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="keywordtype">int</span> got_frame_local;</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <a class="code" href="structAVPacket.html">AVPacket</a> enc_pkt;</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  int (*enc_func)(<a class="code" href="structAVCodecContext.html">AVCodecContext</a> *, <a class="code" href="structAVPacket.html">AVPacket</a> *, <span class="keyword">const</span> <a class="code" href="structAVFrame.html">AVFrame</a> *, <span class="keywordtype">int</span> *) =</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  (ifmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[stream_index]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>-><a class="code" href="structAVCodecContext.html#a3f99ca3115c44e6d7772c9384faf15e6">codec_type</a> ==</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  <a class="code" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48ac1a46f59be5c6c2d3412ab172d6b8cf5">AVMEDIA_TYPE_VIDEO</a>) ? <a class="code" href="group__lavc__encoding.html#gaa2dc9e9ea2567ebb2801a08153c7306b">avcodec_encode_video2</a> : <a class="code" href="group__lavc__encoding.html#ga93a49fbd0973b216dcb8a8c5dffe1d82">avcodec_encode_audio2</a>;</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span> </div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="keywordflow">if</span> (!got_frame)</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  got_frame = &got_frame_local;</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span> </div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gad172eacfed8653e454c6fdcbe53baab3">AV_LOG_INFO</a>, <span class="stringliteral">"Encoding frame\n"</span>);</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="comment">/* encode filtered frame */</span></div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  enc_pkt.<a class="code" href="structAVPacket.html#aaf4fe58dfcc7c232c1f2268b539d8367">data</a> = NULL;</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  enc_pkt.<a class="code" href="structAVPacket.html#a4d1ea19f63eb107111fd650ca514d1f4">size</a> = 0;</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <a class="code" href="group__lavc__packet.html#gac9cb9756175b96e7441575803757fb73">av_init_packet</a>(&enc_pkt);</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  ret = enc_func(ofmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[stream_index]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>, &enc_pkt,</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  filt_frame, got_frame);</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <a class="code" href="group__lavu__frame.html#ga979d73f3228814aee56aeca0636e37cc">av_frame_free</a>(&filt_frame);</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keywordflow">if</span> (ret < 0)</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="keywordflow">if</span> (!(*got_frame))</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span> </div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="comment">/* prepare packet for muxing */</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  enc_pkt.<a class="code" href="structAVPacket.html#a0d1cb9b5a32b00fb6edc81ea3aae2a49">stream_index</a> = stream_index;</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <a class="code" href="group__lavc__packet.html#gae5c86e4d93f6e7aa62ef2c60763ea67e">av_packet_rescale_ts</a>(&enc_pkt,</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  ofmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[stream_index]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>-><a class="code" href="structAVCodecContext.html#ab7bfeb9fa5840aac090e2b0bd0ef7589">time_base</a>,</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  ofmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[stream_index]-><a class="code" href="structAVStream.html#a9db755451f14e2bf590d4b85d82b32e6">time_base</a>);</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span> </div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#ga5b7221c3afd06848486776bd834a58a5">AV_LOG_DEBUG</a>, <span class="stringliteral">"Muxing frame\n"</span>);</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="comment">/* mux encoded frame */</span></div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  ret = <a class="code" href="group__lavf__encoding.html#ga37352ed2c63493c38219d935e71db6c1">av_interleaved_write_frame</a>(ofmt_ctx, &enc_pkt);</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> }</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span> </div>
<div class="line"><a name="l00401"></a><span class="lineno"><a class="line" href="transcoding_8c.html#a255192428438daf73b9f8060c0815712"> 401</a></span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="transcoding_8c.html#a255192428438daf73b9f8060c0815712">filter_encode_write_frame</a>(<a class="code" href="structAVFrame.html">AVFrame</a> *<a class="code" href="demuxing__decoding_8c.html#ad7d33d579a8d4241a5e643e39287a209">frame</a>, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> stream_index)</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span> {</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <a class="code" href="structAVFrame.html">AVFrame</a> *filt_frame;</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span> </div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gad172eacfed8653e454c6fdcbe53baab3">AV_LOG_INFO</a>, <span class="stringliteral">"Pushing decoded frame to filters\n"</span>);</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="comment">/* push the decoded frame into the filtergraph */</span></div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  ret = <a class="code" href="group__lavfi__buffersrc.html#ga73ed90c3c3407f36e54d65f91faaaed9">av_buffersrc_add_frame_flags</a>(filter_ctx[stream_index].<a class="code" href="filtering__audio_8c.html#a8dce1714a267758c056947f105f66a82">buffersrc_ctx</a>,</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  frame, 0);</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Error while feeding the filtergraph\n"</span>);</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  }</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span> </div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="comment">/* pull filtered frames from the filtergraph */</span></div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  <span class="keywordflow">while</span> (1) {</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  filt_frame = <a class="code" href="group__lavu__frame.html#gac700017c5270c79c1e1befdeeb008b2f">av_frame_alloc</a>();</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="keywordflow">if</span> (!filt_frame) {</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  ret = <a class="code" href="group__lavu__error.html#gae4bb6f165973d09584e0ec0f335f69ca">AVERROR</a>(ENOMEM);</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  }</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gad172eacfed8653e454c6fdcbe53baab3">AV_LOG_INFO</a>, <span class="stringliteral">"Pulling filtered frame from filters\n"</span>);</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  ret = <a class="code" href="group__lavfi__buffersink.html#ga653228f4cbca427c654d844a5fc59cfa">av_buffersink_get_frame</a>(filter_ctx[stream_index].<a class="code" href="filtering__audio_8c.html#a5a75197a9aaa609af34cfc0d199acbda">buffersink_ctx</a>,</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  filt_frame);</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="comment">/* if no more frames for output - returns AVERROR(EAGAIN)</span></div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span> <span class="comment"> * if flushed and no more frames for output - returns AVERROR_EOF</span></div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span> <span class="comment"> * rewrite retcode to 0 to show it as normal procedure completion</span></div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  <span class="keywordflow">if</span> (ret == <a class="code" href="group__lavu__error.html#gae4bb6f165973d09584e0ec0f335f69ca">AVERROR</a>(EAGAIN) || ret == <a class="code" href="group__lavu__error.html#gab4faa0afdf35076914824200331defff">AVERROR_EOF</a>)</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  ret = 0;</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <a class="code" href="group__lavu__frame.html#ga979d73f3228814aee56aeca0636e37cc">av_frame_free</a>(&filt_frame);</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  }</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span> </div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  filt_frame-><a class="code" href="structAVFrame.html#af9920fc3fbfa347b8943ae461b50d18b">pict_type</a> = <a class="code" href="group__lavu__picture.html#ggae6cbcab1f70d8e476757f1c1f5a0a78ea33183189d771e3325ccdd36fa980b6f6">AV_PICTURE_TYPE_NONE</a>;</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  ret = <a class="code" href="transcoding_8c.html#afb371e273a9d2e9cc0539a6453913533">encode_write_frame</a>(filt_frame, stream_index, NULL);</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="keywordflow">if</span> (ret < 0)</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  }</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span> </div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span> }</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span> </div>
<div class="line"><a name="l00445"></a><span class="lineno"><a class="line" href="transcoding_8c.html#ad55ba3d9c6ebe490eb8766a91b627d3e"> 445</a></span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="transcoding_8c.html#ad55ba3d9c6ebe490eb8766a91b627d3e">flush_encoder</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> stream_index)</div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span> {</div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <span class="keywordtype">int</span> got_frame;</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span> </div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  <span class="keywordflow">if</span> (!(ofmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[stream_index]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>-><a class="code" href="structAVCodecContext.html#a6e606effa68724cae2ef5cc05f7fd9cb">codec</a>-><a class="code" href="structAVCodec.html#af51f7ff3dac8b730f46b9713e49a2518">capabilities</a> &</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <a class="code" href="group__lavc__core.html#ga3f55f5bcfbb12e06c7cb1195028855e6">AV_CODEC_CAP_DELAY</a>))</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span> </div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <span class="keywordflow">while</span> (1) {</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gad172eacfed8653e454c6fdcbe53baab3">AV_LOG_INFO</a>, <span class="stringliteral">"Flushing stream #%u encoder\n"</span>, stream_index);</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  ret = <a class="code" href="transcoding_8c.html#afb371e273a9d2e9cc0539a6453913533">encode_write_frame</a>(NULL, stream_index, &got_frame);</div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="keywordflow">if</span> (ret < 0)</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <span class="keywordflow">if</span> (!got_frame)</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  }</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span> }</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span> </div>
<div class="line"><a name="l00465"></a><span class="lineno"><a class="line" href="transcoding_8c.html#a3c04138a5bfe5d72780bb7e82a18e627"> 465</a></span> <span class="keywordtype">int</span> <a class="code" href="transcoding_8c.html#a3c04138a5bfe5d72780bb7e82a18e627">main</a>(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv)</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span> {</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  <a class="code" href="structAVPacket.html">AVPacket</a> packet = { .<a class="code" href="structAVPacket.html#aaf4fe58dfcc7c232c1f2268b539d8367">data</a> = NULL, .size = 0 };</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <a class="code" href="structAVFrame.html">AVFrame</a> *<a class="code" href="demuxing__decoding_8c.html#ad7d33d579a8d4241a5e643e39287a209">frame</a> = NULL;</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <span class="keyword">enum</span> <a class="code" href="group__lavu__misc.html#ga9a84bba4713dfced21a1a56163be1f48">AVMediaType</a> type;</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> stream_index;</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  <span class="keywordtype">int</span> got_frame;</div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  int (*dec_func)(<a class="code" href="structAVCodecContext.html">AVCodecContext</a> *, <a class="code" href="structAVFrame.html">AVFrame</a> *, <span class="keywordtype">int</span> *, <span class="keyword">const</span> <a class="code" href="structAVPacket.html">AVPacket</a> *);</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span> </div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  <span class="keywordflow">if</span> (argc != 3) {</div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Usage: %s <input file> <output file>\n"</span>, argv[0]);</div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  }</div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span> </div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <a class="code" href="group__lavf__core.html#ga917265caec45ef5a0646356ed1a507e3">av_register_all</a>();</div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  <a class="code" href="group__lavfi.html#ga2bf8f0a6e2599faf4bf97b04a5a25149">avfilter_register_all</a>();</div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span> </div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  <span class="keywordflow">if</span> ((ret = <a class="code" href="transcoding_8c.html#abd04bf1a933d4d2698482f4949c61fed">open_input_file</a>(argv[1])) < 0)</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="keywordflow">if</span> ((ret = <a class="code" href="transcoding_8c.html#ab6c33edf9a42e2f71594a7cdc6276407">open_output_file</a>(argv[2])) < 0)</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="keywordflow">if</span> ((ret = <a class="code" href="transcoding_8c.html#a05c93a3c60f2fc12e3fb7884be1128d6">init_filters</a>()) < 0)</div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span> </div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <span class="comment">/* read all packets */</span></div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="keywordflow">while</span> (1) {</div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <span class="keywordflow">if</span> ((ret = <a class="code" href="group__lavf__decoding.html#ga4fdb3084415a82e3810de6ee60e46a61">av_read_frame</a>(ifmt_ctx, &packet)) < 0)</div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  stream_index = packet.<a class="code" href="structAVPacket.html#a0d1cb9b5a32b00fb6edc81ea3aae2a49">stream_index</a>;</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  type = ifmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[packet.<a class="code" href="structAVPacket.html#a0d1cb9b5a32b00fb6edc81ea3aae2a49">stream_index</a>]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>-><a class="code" href="structAVCodecContext.html#a3f99ca3115c44e6d7772c9384faf15e6">codec_type</a>;</div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#ga5b7221c3afd06848486776bd834a58a5">AV_LOG_DEBUG</a>, <span class="stringliteral">"Demuxer gave frame of stream_index %u\n"</span>,</div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  stream_index);</div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span> </div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  <span class="keywordflow">if</span> (filter_ctx[stream_index].<a class="code" href="filtering__audio_8c.html#a36c24d3c84d08e2f5a69e7368c211412">filter_graph</a>) {</div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#ga5b7221c3afd06848486776bd834a58a5">AV_LOG_DEBUG</a>, <span class="stringliteral">"Going to reencode&filter the frame\n"</span>);</div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  frame = <a class="code" href="group__lavu__frame.html#gac700017c5270c79c1e1befdeeb008b2f">av_frame_alloc</a>();</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  <span class="keywordflow">if</span> (!frame) {</div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  ret = <a class="code" href="group__lavu__error.html#gae4bb6f165973d09584e0ec0f335f69ca">AVERROR</a>(ENOMEM);</div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  }</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <a class="code" href="group__lavc__packet.html#gae5c86e4d93f6e7aa62ef2c60763ea67e">av_packet_rescale_ts</a>(&packet,</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  ifmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[stream_index]-><a class="code" href="structAVStream.html#a9db755451f14e2bf590d4b85d82b32e6">time_base</a>,</div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  ifmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[stream_index]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>-><a class="code" href="structAVCodecContext.html#ab7bfeb9fa5840aac090e2b0bd0ef7589">time_base</a>);</div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  dec_func = (type == <a class="code" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48ac1a46f59be5c6c2d3412ab172d6b8cf5">AVMEDIA_TYPE_VIDEO</a>) ? <a class="code" href="group__lavc__decoding.html#ga99ee61b6dcffb7817a275d39da58cc74">avcodec_decode_video2</a> :</div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <a class="code" href="group__lavc__decoding.html#ga834bb1b062fbcc2de4cf7fb93f154a3e">avcodec_decode_audio4</a>;</div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  ret = dec_func(ifmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[stream_index]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>, frame,</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  &got_frame, &packet);</div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  <a class="code" href="group__lavu__frame.html#ga979d73f3228814aee56aeca0636e37cc">av_frame_free</a>(&frame);</div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Decoding failed\n"</span>);</div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  }</div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span> </div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <span class="keywordflow">if</span> (got_frame) {</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  frame-><a class="code" href="structAVFrame.html#a0452833e3ab6ddd7acbf82817a7818a4">pts</a> = <a class="code" href="group__lavu__frame.html#gacb9d9082c10e625e51a68caceabd4458">av_frame_get_best_effort_timestamp</a>(frame);</div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  ret = <a class="code" href="transcoding_8c.html#a255192428438daf73b9f8060c0815712">filter_encode_write_frame</a>(frame, stream_index);</div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <a class="code" href="group__lavu__frame.html#ga979d73f3228814aee56aeca0636e37cc">av_frame_free</a>(&frame);</div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  <span class="keywordflow">if</span> (ret < 0)</div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  <a class="code" href="group__lavu__frame.html#ga979d73f3228814aee56aeca0636e37cc">av_frame_free</a>(&frame);</div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  }</div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  <span class="comment">/* remux this frame without reencoding */</span></div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <a class="code" href="group__lavc__packet.html#gae5c86e4d93f6e7aa62ef2c60763ea67e">av_packet_rescale_ts</a>(&packet,</div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  ifmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[stream_index]-><a class="code" href="structAVStream.html#a9db755451f14e2bf590d4b85d82b32e6">time_base</a>,</div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  ofmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[stream_index]-><a class="code" href="structAVStream.html#a9db755451f14e2bf590d4b85d82b32e6">time_base</a>);</div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span> </div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  ret = <a class="code" href="group__lavf__encoding.html#ga37352ed2c63493c38219d935e71db6c1">av_interleaved_write_frame</a>(ofmt_ctx, &packet);</div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <span class="keywordflow">if</span> (ret < 0)</div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  }</div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  <a class="code" href="group__lavc__packet.html#ga63d5a489b419bd5d45cfd09091cbcbc2">av_packet_unref</a>(&packet);</div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  }</div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span> </div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  <span class="comment">/* flush filters and encoders */</span></div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  <span class="keywordflow">for</span> (i = 0; i < ifmt_ctx-><a class="code" href="structAVFormatContext.html#a0b748d924898b08b89ff4974afd17285">nb_streams</a>; i++) {</div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  <span class="comment">/* flush filter */</span></div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="keywordflow">if</span> (!filter_ctx[i].<a class="code" href="filtering__audio_8c.html#a36c24d3c84d08e2f5a69e7368c211412">filter_graph</a>)</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  ret = <a class="code" href="transcoding_8c.html#a255192428438daf73b9f8060c0815712">filter_encode_write_frame</a>(NULL, i);</div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Flushing filter failed\n"</span>);</div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  }</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span> </div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  <span class="comment">/* flush encoder */</span></div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  ret = <a class="code" href="transcoding_8c.html#ad55ba3d9c6ebe490eb8766a91b627d3e">flush_encoder</a>(i);</div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Flushing encoder failed\n"</span>);</div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  }</div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  }</div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span> </div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  <a class="code" href="group__lavf__encoding.html#ga7f14007e7dc8f481f054b21614dfec13">av_write_trailer</a>(ofmt_ctx);</div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span> end:</div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  <a class="code" href="group__lavc__packet.html#ga63d5a489b419bd5d45cfd09091cbcbc2">av_packet_unref</a>(&packet);</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  <a class="code" href="group__lavu__frame.html#ga979d73f3228814aee56aeca0636e37cc">av_frame_free</a>(&frame);</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  <span class="keywordflow">for</span> (i = 0; i < ifmt_ctx-><a class="code" href="structAVFormatContext.html#a0b748d924898b08b89ff4974afd17285">nb_streams</a>; i++) {</div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  <a class="code" href="group__lavc__core.html#gaf4daa92361efb3523ef5afeb0b54077f">avcodec_close</a>(ifmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[i]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>);</div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  <span class="keywordflow">if</span> (ofmt_ctx && ofmt_ctx-><a class="code" href="structAVFormatContext.html#a0b748d924898b08b89ff4974afd17285">nb_streams</a> > i && ofmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[i] && ofmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[i]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>)</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  <a class="code" href="group__lavc__core.html#gaf4daa92361efb3523ef5afeb0b54077f">avcodec_close</a>(ofmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[i]-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>);</div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  <span class="keywordflow">if</span> (filter_ctx && filter_ctx[i].<a class="code" href="filtering__audio_8c.html#a36c24d3c84d08e2f5a69e7368c211412">filter_graph</a>)</div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  <a class="code" href="group__lavfi.html#ga871684449dac05050df238a18d0d493b">avfilter_graph_free</a>(&filter_ctx[i].filter_graph);</div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  }</div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  <a class="code" href="group__lavu__mem.html#ga0c9096f498624c525aa2315b8a20c411">av_free</a>(filter_ctx);</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  <a class="code" href="group__lavf__decoding.html#gae804b99aec044690162b8b9b110236a4">avformat_close_input</a>(&ifmt_ctx);</div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  <span class="keywordflow">if</span> (ofmt_ctx && !(ofmt_ctx-><a class="code" href="structAVFormatContext.html#a20d80ac07e38ff5c268d15aaf2798b98">oformat</a>-><a class="code" href="structAVOutputFormat.html#aad55a00e728a020c1dcfaaf695320445">flags</a> & <a class="code" href="avformat_8h.html#a752cce390d480521919aa5d8be24ac0b">AVFMT_NOFILE</a>))</div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  <a class="code" href="avio_8h.html#ae118a1f37f1e48617609ead9910aac15">avio_closep</a>(&ofmt_ctx-><a class="code" href="structAVFormatContext.html#a1e7324262b6b78522e52064daaa7bc87">pb</a>);</div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  <a class="code" href="group__lavf__core.html#gac2990b13b68e831a408fce8e1d0d6445">avformat_free_context</a>(ofmt_ctx);</div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span> </div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  <span class="keywordflow">if</span> (ret < 0)</div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a>(NULL, <a class="code" href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a>, <span class="stringliteral">"Error occurred: %s\n"</span>, <a class="code" href="group__lavu__error.html#gac4f6e109c242c81aeee21868d3f35e12">av_err2str</a>(ret));</div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span> </div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  <span class="keywordflow">return</span> ret ? 1 : 0;</div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span> }</div>
<div class="ttc" id="avio_8h_html_a371a670112abc5f3e15bc570da076301"><div class="ttname"><a href="avio_8h.html#a371a670112abc5f3e15bc570da076301">avio_open</a></div><div class="ttdeci">int avio_open(AVIOContext **s, const char *url, int flags)</div><div class="ttdoc">Create and initialize a AVIOContext for accessing the resource indicated by url. </div></div>
<div class="ttc" id="structFilteringContext_html_aaf35e44d4e6100095b1db444e2d316cd"><div class="ttname"><a href="structFilteringContext.html#aaf35e44d4e6100095b1db444e2d316cd">FilteringContext::filter_graph</a></div><div class="ttdeci">AVFilterGraph * filter_graph</div><div class="ttdef"><b>Definition:</b> <a href="transcoding_8c_source.html#l00044">transcoding.c:44</a></div></div>
<div class="ttc" id="structAVCodecContext_html_a6e606effa68724cae2ef5cc05f7fd9cb"><div class="ttname"><a href="structAVCodecContext.html#a6e606effa68724cae2ef5cc05f7fd9cb">AVCodecContext::codec</a></div><div class="ttdeci">const struct AVCodec * codec</div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l01541">avcodec.h:1541</a></div></div>
<div class="ttc" id="filtering__audio_8c_html_a5a75197a9aaa609af34cfc0d199acbda"><div class="ttname"><a href="filtering__audio_8c.html#a5a75197a9aaa609af34cfc0d199acbda">buffersink_ctx</a></div><div class="ttdeci">AVFilterContext * buffersink_ctx</div><div class="ttdef"><b>Definition:</b> <a href="filtering__audio_8c_source.html#l00045">filtering_audio.c:45</a></div></div>
<div class="ttc" id="transcoding_8c_html_afb371e273a9d2e9cc0539a6453913533"><div class="ttname"><a href="transcoding_8c.html#afb371e273a9d2e9cc0539a6453913533">encode_write_frame</a></div><div class="ttdeci">static int encode_write_frame(AVFrame *filt_frame, unsigned int stream_index, int *got_frame)</div><div class="ttdef"><b>Definition:</b> <a href="transcoding_8c_source.html#l00365">transcoding.c:365</a></div></div>
<div class="ttc" id="group__lavu__error_html_gaa6e5781e75b15ce44b0baea170c98a45"><div class="ttname"><a href="group__lavu__error.html#gaa6e5781e75b15ce44b0baea170c98a45">AVERROR_INVALIDDATA</a></div><div class="ttdeci">#define AVERROR_INVALIDDATA</div><div class="ttdoc">Invalid data found when processing input. </div><div class="ttdef"><b>Definition:</b> <a href="error_8h_source.html#l00059">error.h:59</a></div></div>
<div class="ttc" id="structAVFrame_html"><div class="ttname"><a href="structAVFrame.html">AVFrame</a></div><div class="ttdoc">This structure describes decoded (raw) audio or video data. </div><div class="ttdef"><b>Definition:</b> <a href="frame_8h_source.html#l00181">frame.h:181</a></div></div>
<div class="ttc" id="group__lavc__encoding_html_ga9f820c481615c3a02d0407bac0bdbf25"><div class="ttname"><a href="group__lavc__encoding.html#ga9f820c481615c3a02d0407bac0bdbf25">avcodec_find_encoder</a></div><div class="ttdeci">AVCodec * avcodec_find_encoder(enum AVCodecID id)</div><div class="ttdoc">Find a registered encoder with a matching codec ID. </div></div>
<div class="ttc" id="group__lavf__encoding_html_ga37352ed2c63493c38219d935e71db6c1"><div class="ttname"><a href="group__lavf__encoding.html#ga37352ed2c63493c38219d935e71db6c1">av_interleaved_write_frame</a></div><div class="ttdeci">int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt)</div><div class="ttdoc">Write a packet to an output media file ensuring correct interleaving. </div></div>
<div class="ttc" id="group__lavfi_html_ga6c778454b86f845805ffd814b4ce51d4"><div class="ttname"><a href="group__lavfi.html#ga6c778454b86f845805ffd814b4ce51d4">avfilter_graph_alloc</a></div><div class="ttdeci">AVFilterGraph * avfilter_graph_alloc(void)</div><div class="ttdoc">Allocate a filter graph. </div></div>
<div class="ttc" id="buffersrc_8h_html"><div class="ttname"><a href="buffersrc_8h.html">buffersrc.h</a></div><div class="ttdoc">Memory buffer source API. </div></div>
<div class="ttc" id="filtering__audio_8c_html_a36c24d3c84d08e2f5a69e7368c211412"><div class="ttname"><a href="filtering__audio_8c.html#a36c24d3c84d08e2f5a69e7368c211412">filter_graph</a></div><div class="ttdeci">AVFilterGraph * filter_graph</div><div class="ttdef"><b>Definition:</b> <a href="filtering__audio_8c_source.html#l00047">filtering_audio.c:47</a></div></div>
<div class="ttc" id="group__lavfi_html_ga1896c46b7bc6ff1bdb1a4815faa9ad07"><div class="ttname"><a href="group__lavfi.html#ga1896c46b7bc6ff1bdb1a4815faa9ad07">avfilter_graph_config</a></div><div class="ttdeci">int avfilter_graph_config(AVFilterGraph *graphctx, void *log_ctx)</div><div class="ttdoc">Check validity and configure all the links and formats in the graph. </div></div>
<div class="ttc" id="group__lavfi_html_ga294500a9856260eb1552354fd9d9a6c4"><div class="ttname"><a href="group__lavfi.html#ga294500a9856260eb1552354fd9d9a6c4">avfilter_inout_free</a></div><div class="ttdeci">void avfilter_inout_free(AVFilterInOut **inout)</div><div class="ttdoc">Free the supplied list of AVFilterInOut and set *inout to NULL. </div></div>
<div class="ttc" id="structAVFilterInOut_html_af8c8cf9ffb650974d19e791f5bb7cf33"><div class="ttname"><a href="structAVFilterInOut.html#af8c8cf9ffb650974d19e791f5bb7cf33">AVFilterInOut::next</a></div><div class="ttdeci">struct AVFilterInOut * next</div><div class="ttdoc">next input/input in the list, NULL if this is the last </div><div class="ttdef"><b>Definition:</b> <a href="avfilter_8h_source.html#l00947">avfilter.h:947</a></div></div>
<div class="ttc" id="structAVRational_html_ae9a98c10a301c5e937095105b6f0fdb9"><div class="ttname"><a href="structAVRational.html#ae9a98c10a301c5e937095105b6f0fdb9">AVRational::num</a></div><div class="ttdeci">int num</div><div class="ttdoc">numerator </div><div class="ttdef"><b>Definition:</b> <a href="rational_8h_source.html#l00044">rational.h:44</a></div></div>
<div class="ttc" id="structAVPacket_html_a4d1ea19f63eb107111fd650ca514d1f4"><div class="ttname"><a href="structAVPacket.html#a4d1ea19f63eb107111fd650ca514d1f4">AVPacket::size</a></div><div class="ttdeci">int size</div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l01468">avcodec.h:1468</a></div></div>
<div class="ttc" id="avio_8h_html_a5c9308f296545a8f3b7687d277a6dabc"><div class="ttname"><a href="avio_8h.html#a5c9308f296545a8f3b7687d277a6dabc">AVIO_FLAG_WRITE</a></div><div class="ttdeci">#define AVIO_FLAG_WRITE</div><div class="ttdoc">write-only </div><div class="ttdef"><b>Definition:</b> <a href="avio_8h_source.html#l00538">avio.h:538</a></div></div>
<div class="ttc" id="structAVCodecContext_html_a5252d34fbce300228d4dbda19a8c3293"><div class="ttname"><a href="structAVCodecContext.html#a5252d34fbce300228d4dbda19a8c3293">AVCodecContext::sample_aspect_ratio</a></div><div class="ttdeci">AVRational sample_aspect_ratio</div><div class="ttdoc">sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...</div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l01935">avcodec.h:1935</a></div></div>
<div class="ttc" id="group__lavfi_html_ga871684449dac05050df238a18d0d493b"><div class="ttname"><a href="group__lavfi.html#ga871684449dac05050df238a18d0d493b">avfilter_graph_free</a></div><div class="ttdeci">void avfilter_graph_free(AVFilterGraph **graph)</div><div class="ttdoc">Free a graph, destroy its links, and set *graph to NULL. </div></div>
<div class="ttc" id="group__lavu__log_html_gabd386ffd4b27637cf34e98d5d1a6e8ae"><div class="ttname"><a href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a></div><div class="ttdeci">void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3</div><div class="ttdoc">Send the specified message to the log if the level is less than or equal to the current av_log_level...</div></div>
<div class="ttc" id="structAVCodecContext_html_a0425c77b3d06d71e5db88b1d7e1b37f2"><div class="ttname"><a href="structAVCodecContext.html#a0425c77b3d06d71e5db88b1d7e1b37f2">AVCodecContext::pix_fmt</a></div><div class="ttdeci">enum AVPixelFormat pix_fmt</div><div class="ttdoc">Pixel format, see AV_PIX_FMT_xxx. </div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l01752">avcodec.h:1752</a></div></div>
<div class="ttc" id="group__opt__set__funcs_html_ga6c32155fd8a96bed2f8cf5ebc030dadf"><div class="ttname"><a href="group__opt__set__funcs.html#ga6c32155fd8a96bed2f8cf5ebc030dadf">av_opt_set_bin</a></div><div class="ttdeci">int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int size, int search_flags)</div></div>
<div class="ttc" id="group__lavc__encoding_html_ga93a49fbd0973b216dcb8a8c5dffe1d82"><div class="ttname"><a href="group__lavc__encoding.html#ga93a49fbd0973b216dcb8a8c5dffe1d82">avcodec_encode_audio2</a></div><div class="ttdeci">int avcodec_encode_audio2(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)</div><div class="ttdoc">Encode a frame of audio. </div></div>
<div class="ttc" id="structAVCodec_html"><div class="ttname"><a href="structAVCodec.html">AVCodec</a></div><div class="ttdoc">AVCodec. </div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l03392">avcodec.h:3392</a></div></div>
<div class="ttc" id="group__lavc__core_html_ga3933b21b9dcb9173df3e56673b7a7d76"><div class="ttname"><a href="group__lavc__core.html#ga3933b21b9dcb9173df3e56673b7a7d76">avcodec_copy_context</a></div><div class="ttdeci">int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src)</div><div class="ttdoc">Copy the settings of the source AVCodecContext into the destination AVCodecContext. </div></div>
<div class="ttc" id="structAVCodecContext_html_ab7bfeb9fa5840aac090e2b0bd0ef7589"><div class="ttname"><a href="structAVCodecContext.html#ab7bfeb9fa5840aac090e2b0bd0ef7589">AVCodecContext::time_base</a></div><div class="ttdeci">AVRational time_base</div><div class="ttdoc">This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...</div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l01661">avcodec.h:1661</a></div></div>
<div class="ttc" id="group__lavu__picture_html_ggae6cbcab1f70d8e476757f1c1f5a0a78ea33183189d771e3325ccdd36fa980b6f6"><div class="ttname"><a href="group__lavu__picture.html#ggae6cbcab1f70d8e476757f1c1f5a0a78ea33183189d771e3325ccdd36fa980b6f6">AV_PICTURE_TYPE_NONE</a></div><div class="ttdoc">Undefined. </div><div class="ttdef"><b>Definition:</b> <a href="avutil_8h_source.html#l00265">avutil.h:265</a></div></div>
<div class="ttc" id="group__channel__mask__c_html_gac95619abeb32e4a3daa18e3ff3419380"><div class="ttname"><a href="group__channel__mask__c.html#gac95619abeb32e4a3daa18e3ff3419380">av_get_channel_layout_nb_channels</a></div><div class="ttdeci">int av_get_channel_layout_nb_channels(uint64_t channel_layout)</div><div class="ttdoc">Return the number of channels in the channel layout. </div></div>
<div class="ttc" id="structAVFormatContext_html"><div class="ttname"><a href="structAVFormatContext.html">AVFormatContext</a></div><div class="ttdoc">Format I/O context. </div><div class="ttdef"><b>Definition:</b> <a href="avformat_8h_source.html#l01314">avformat.h:1314</a></div></div>
<div class="ttc" id="transcoding_8c_html_abd04bf1a933d4d2698482f4949c61fed"><div class="ttname"><a href="transcoding_8c.html#abd04bf1a933d4d2698482f4949c61fed">open_input_file</a></div><div class="ttdeci">static int open_input_file(const char *filename)</div><div class="ttdef"><b>Definition:</b> <a href="transcoding_8c_source.html#l00048">transcoding.c:48</a></div></div>
<div class="ttc" id="buffersink_8h_html"><div class="ttname"><a href="buffersink_8h.html">buffersink.h</a></div><div class="ttdoc">memory buffer sink API for audio and video </div></div>
<div class="ttc" id="group__lavc__core_html_ga3f55f5bcfbb12e06c7cb1195028855e6"><div class="ttname"><a href="group__lavc__core.html#ga3f55f5bcfbb12e06c7cb1195028855e6">AV_CODEC_CAP_DELAY</a></div><div class="ttdeci">#define AV_CODEC_CAP_DELAY</div><div class="ttdoc">Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...</div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l00881">avcodec.h:881</a></div></div>
<div class="ttc" id="structAVCodecContext_html_a1bdba69ea111e2a9d03fdaa7a46a4c45"><div class="ttname"><a href="structAVCodecContext.html#a1bdba69ea111e2a9d03fdaa7a46a4c45">AVCodecContext::sample_fmt</a></div><div class="ttdeci">enum AVSampleFormat sample_fmt</div><div class="ttdoc">audio sample format </div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l02295">avcodec.h:2295</a></div></div>
<div class="ttc" id="structAVOutputFormat_html_aad55a00e728a020c1dcfaaf695320445"><div class="ttname"><a href="structAVOutputFormat.html#aad55a00e728a020c1dcfaaf695320445">AVOutputFormat::flags</a></div><div class="ttdeci">int flags</div><div class="ttdoc">can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER, AVFMT_NOTIMESTAMPS, AVFMT_VARIABLE_FPS, AVFMT_NODIMENSIONS, AVFMT_NOSTREAMS, AVFMT_ALLOW_FLUSH, AVFMT_TS_NONSTRICT </div><div class="ttdef"><b>Definition:</b> <a href="avformat_8h_source.html#l00542">avformat.h:542</a></div></div>
<div class="ttc" id="group__lavu__frame_html_gac700017c5270c79c1e1befdeeb008b2f"><div class="ttname"><a href="group__lavu__frame.html#gac700017c5270c79c1e1befdeeb008b2f">av_frame_alloc</a></div><div class="ttdeci">AVFrame * av_frame_alloc(void)</div><div class="ttdoc">Allocate an AVFrame and set its fields to default values. </div></div>
<div class="ttc" id="opt_8h_html"><div class="ttname"><a href="opt_8h.html">opt.h</a></div><div class="ttdoc">AVOptions. </div></div>
<div class="ttc" id="structAVFrame_html_a0452833e3ab6ddd7acbf82817a7818a4"><div class="ttname"><a href="structAVFrame.html#a0452833e3ab6ddd7acbf82817a7818a4">AVFrame::pts</a></div><div class="ttdeci">int64_t pts</div><div class="ttdoc">Presentation timestamp in time_base units (time when frame should be shown to user). </div><div class="ttdef"><b>Definition:</b> <a href="frame_8h_source.html#l00262">frame.h:262</a></div></div>
<div class="ttc" id="group__lavf__core_html_gadcb0fd3e507d9b58fe78f61f8ad39827"><div class="ttname"><a href="group__lavf__core.html#gadcb0fd3e507d9b58fe78f61f8ad39827">avformat_new_stream</a></div><div class="ttdeci">AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)</div><div class="ttdoc">Add a new stream to a media file. </div></div>
<div class="ttc" id="structAVFormatContext_html_acfefb6b6cf21e87a0dcbd1a547ba2348"><div class="ttname"><a href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">AVFormatContext::streams</a></div><div class="ttdeci">AVStream ** streams</div><div class="ttdoc">A list of all streams in the file. </div><div class="ttdef"><b>Definition:</b> <a href="avformat_8h_source.html#l01382">avformat.h:1382</a></div></div>
<div class="ttc" id="group__lavc__encoding_html_gaa2dc9e9ea2567ebb2801a08153c7306b"><div class="ttname"><a href="group__lavc__encoding.html#gaa2dc9e9ea2567ebb2801a08153c7306b">avcodec_encode_video2</a></div><div class="ttdeci">int avcodec_encode_video2(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)</div><div class="ttdoc">Encode a frame of video. </div></div>
<div class="ttc" id="group__lavfi_html_ga2bf8f0a6e2599faf4bf97b04a5a25149"><div class="ttname"><a href="group__lavfi.html#ga2bf8f0a6e2599faf4bf97b04a5a25149">avfilter_register_all</a></div><div class="ttdeci">void avfilter_register_all(void)</div><div class="ttdoc">Initialize the filter system. </div></div>
<div class="ttc" id="demuxing__decoding_8c_html_ad7d33d579a8d4241a5e643e39287a209"><div class="ttname"><a href="demuxing__decoding_8c.html#ad7d33d579a8d4241a5e643e39287a209">frame</a></div><div class="ttdeci">static AVFrame * frame</div><div class="ttdef"><b>Definition:</b> <a href="demuxing__decoding_8c_source.html#l00053">demuxing_decoding.c:53</a></div></div>
<div class="ttc" id="group__lavfi_html_gac0788a9ab6966dba9318b5d5c7524fea"><div class="ttname"><a href="group__lavfi.html#gac0788a9ab6966dba9318b5d5c7524fea">avfilter_graph_create_filter</a></div><div class="ttdeci">int avfilter_graph_create_filter(AVFilterContext **filt_ctx, const AVFilter *filt, const char *name, const char *args, void *opaque, AVFilterGraph *graph_ctx)</div><div class="ttdoc">Create and add a filter instance into an existing graph. </div></div>
<div class="ttc" id="structAVPacket_html_aaf4fe58dfcc7c232c1f2268b539d8367"><div class="ttname"><a href="structAVPacket.html#aaf4fe58dfcc7c232c1f2268b539d8367">AVPacket::data</a></div><div class="ttdeci">uint8_t * data</div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l01467">avcodec.h:1467</a></div></div>
<div class="ttc" id="group__lavu__error_html_gab4faa0afdf35076914824200331defff"><div class="ttname"><a href="group__lavu__error.html#gab4faa0afdf35076914824200331defff">AVERROR_EOF</a></div><div class="ttdeci">#define AVERROR_EOF</div><div class="ttdoc">End of file. </div><div class="ttdef"><b>Definition:</b> <a href="error_8h_source.html#l00055">error.h:55</a></div></div>
<div class="ttc" id="group__lavu__frame_html_gacb9d9082c10e625e51a68caceabd4458"><div class="ttname"><a href="group__lavu__frame.html#gacb9d9082c10e625e51a68caceabd4458">av_frame_get_best_effort_timestamp</a></div><div class="ttdeci">int64_t av_frame_get_best_effort_timestamp(const AVFrame *frame)</div><div class="ttdoc">Accessors for some AVFrame fields. </div></div>
<div class="ttc" id="structAVFormatContext_html_a20d80ac07e38ff5c268d15aaf2798b98"><div class="ttname"><a href="structAVFormatContext.html#a20d80ac07e38ff5c268d15aaf2798b98">AVFormatContext::oformat</a></div><div class="ttdeci">struct AVOutputFormat * oformat</div><div class="ttdoc">The output container format. </div><div class="ttdef"><b>Definition:</b> <a href="avformat_8h_source.html#l01333">avformat.h:1333</a></div></div>
<div class="ttc" id="avformat_8h_html_a6ddf3d982feb45fa5081420ee911f5d5"><div class="ttname"><a href="avformat_8h.html#a6ddf3d982feb45fa5081420ee911f5d5">avformat_alloc_output_context2</a></div><div class="ttdeci">int avformat_alloc_output_context2(AVFormatContext **ctx, AVOutputFormat *oformat, const char *format_name, const char *filename)</div><div class="ttdoc">Allocate an AVFormatContext for an output format. </div></div>
<div class="ttc" id="group__lavf__misc_html_gae2645941f2dc779c307eb6314fd39f10"><div class="ttname"><a href="group__lavf__misc.html#gae2645941f2dc779c307eb6314fd39f10">av_dump_format</a></div><div class="ttdeci">void av_dump_format(AVFormatContext *ic, int index, const char *url, int is_output)</div><div class="ttdoc">Print detailed information about the input or output format, such as duration, bitrate, streams, container, programs, metadata, side data, codec and time base. </div></div>
<div class="ttc" id="group__lavc__core_html_gaf4daa92361efb3523ef5afeb0b54077f"><div class="ttname"><a href="group__lavc__core.html#gaf4daa92361efb3523ef5afeb0b54077f">avcodec_close</a></div><div class="ttdeci">int avcodec_close(AVCodecContext *avctx)</div><div class="ttdoc">Close a given AVCodecContext and free all the data associated with it (but not the AVCodecContext its...</div></div>
<div class="ttc" id="group__lavu__log__constants_html_gaffe151ff4cd8a24b2e77ac8d9616c85c"><div class="ttname"><a href="group__lavu__log__constants.html#gaffe151ff4cd8a24b2e77ac8d9616c85c">AV_LOG_ERROR</a></div><div class="ttdeci">#define AV_LOG_ERROR</div><div class="ttdoc">Something went wrong and cannot losslessly be recovered. </div><div class="ttdef"><b>Definition:</b> <a href="log_8h_source.html#l00176">log.h:176</a></div></div>
<div class="ttc" id="group__lavu__mem_html_ga0c9096f498624c525aa2315b8a20c411"><div class="ttname"><a href="group__lavu__mem.html#ga0c9096f498624c525aa2315b8a20c411">av_free</a></div><div class="ttdeci">void av_free(void *ptr)</div><div class="ttdoc">Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...</div></div>
<div class="ttc" id="transcoding_8c_html_ad55ba3d9c6ebe490eb8766a91b627d3e"><div class="ttname"><a href="transcoding_8c.html#ad55ba3d9c6ebe490eb8766a91b627d3e">flush_encoder</a></div><div class="ttdeci">static int flush_encoder(unsigned int stream_index)</div><div class="ttdef"><b>Definition:</b> <a href="transcoding_8c_source.html#l00445">transcoding.c:445</a></div></div>
<div class="ttc" id="transcoding_8c_html_a24170971d926c1359c289f2515dec3d7"><div class="ttname"><a href="transcoding_8c.html#a24170971d926c1359c289f2515dec3d7">ifmt_ctx</a></div><div class="ttdeci">static AVFormatContext * ifmt_ctx</div><div class="ttdef"><b>Definition:</b> <a href="transcoding_8c_source.html#l00039">transcoding.c:39</a></div></div>
<div class="ttc" id="group__lavc__decoding_html_ga99ee61b6dcffb7817a275d39da58cc74"><div class="ttname"><a href="group__lavc__decoding.html#ga99ee61b6dcffb7817a275d39da58cc74">avcodec_decode_video2</a></div><div class="ttdeci">int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, const AVPacket *avpkt)</div><div class="ttdoc">Decode the video frame of size avpkt->size from avpkt->data into picture. </div></div>
<div class="ttc" id="group__lavc__packet_html_gae5c86e4d93f6e7aa62ef2c60763ea67e"><div class="ttname"><a href="group__lavc__packet.html#gae5c86e4d93f6e7aa62ef2c60763ea67e">av_packet_rescale_ts</a></div><div class="ttdeci">void av_packet_rescale_ts(AVPacket *pkt, AVRational tb_src, AVRational tb_dst)</div><div class="ttdoc">Convert valid timing fields (timestamps / durations) in a packet from one timebase to another...</div></div>
<div class="ttc" id="group__lavu__error_html_gae4bb6f165973d09584e0ec0f335f69ca"><div class="ttname"><a href="group__lavu__error.html#gae4bb6f165973d09584e0ec0f335f69ca">AVERROR</a></div><div class="ttdeci">#define AVERROR(e)</div><div class="ttdef"><b>Definition:</b> <a href="error_8h_source.html#l00043">error.h:43</a></div></div>
<div class="ttc" id="group__lavu__frame_html_ga979d73f3228814aee56aeca0636e37cc"><div class="ttname"><a href="group__lavu__frame.html#ga979d73f3228814aee56aeca0636e37cc">av_frame_free</a></div><div class="ttdeci">void av_frame_free(AVFrame **frame)</div><div class="ttdoc">Free the frame and any dynamically allocated objects in it, e.g. </div></div>
<div class="ttc" id="structAVCodec_html_af51f7ff3dac8b730f46b9713e49a2518"><div class="ttname"><a href="structAVCodec.html#af51f7ff3dac8b730f46b9713e49a2518">AVCodec::capabilities</a></div><div class="ttdeci">int capabilities</div><div class="ttdoc">Codec capabilities. </div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l03411">avcodec.h:3411</a></div></div>
<div class="ttc" id="group__lavu__log__constants_html_ga5b7221c3afd06848486776bd834a58a5"><div class="ttname"><a href="group__lavu__log__constants.html#ga5b7221c3afd06848486776bd834a58a5">AV_LOG_DEBUG</a></div><div class="ttdeci">#define AV_LOG_DEBUG</div><div class="ttdoc">Stuff which is only useful for libav* developers. </div><div class="ttdef"><b>Definition:</b> <a href="log_8h_source.html#l00197">log.h:197</a></div></div>
<div class="ttc" id="structAVCodecContext_html_abb01e291550fa3fb96188af4d494587e"><div class="ttname"><a href="structAVCodecContext.html#abb01e291550fa3fb96188af4d494587e">AVCodecContext::flags</a></div><div class="ttdeci">int flags</div><div class="ttdoc">AV_CODEC_FLAG_*. </div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l01627">avcodec.h:1627</a></div></div>
<div class="ttc" id="group__lavu__misc_html_gga9a84bba4713dfced21a1a56163be1f48a7b4e33b8f30ac94d34ce8d9f7c33927a"><div class="ttname"><a href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48a7b4e33b8f30ac94d34ce8d9f7c33927a">AVMEDIA_TYPE_AUDIO</a></div><div class="ttdef"><b>Definition:</b> <a href="avutil_8h_source.html#l00194">avutil.h:194</a></div></div>
<div class="ttc" id="filtering__audio_8c_html_a8dce1714a267758c056947f105f66a82"><div class="ttname"><a href="filtering__audio_8c.html#a8dce1714a267758c056947f105f66a82">buffersrc_ctx</a></div><div class="ttdeci">AVFilterContext * buffersrc_ctx</div><div class="ttdef"><b>Definition:</b> <a href="filtering__audio_8c_source.html#l00046">filtering_audio.c:46</a></div></div>
<div class="ttc" id="transcoding_8c_html_aac21c1c8f68cdafd001a6a13dc4d7fb7"><div class="ttname"><a href="transcoding_8c.html#aac21c1c8f68cdafd001a6a13dc4d7fb7">filter_ctx</a></div><div class="ttdeci">static FilteringContext * filter_ctx</div><div class="ttdef"><b>Definition:</b> <a href="transcoding_8c_source.html#l00046">transcoding.c:46</a></div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ga31b9d149b2de9821a65f4f5612970838"><div class="ttname"><a href="group__lavu__sampfmts.html#ga31b9d149b2de9821a65f4f5612970838">av_get_sample_fmt_name</a></div><div class="ttdeci">const char * av_get_sample_fmt_name(enum AVSampleFormat sample_fmt)</div><div class="ttdoc">Return the name of sample_fmt, or NULL if sample_fmt is not recognized. </div></div>
<div class="ttc" id="structAVCodecContext_html_aeb08c575a79eb84fc4155dda88f46c06"><div class="ttname"><a href="structAVCodecContext.html#aeb08c575a79eb84fc4155dda88f46c06">AVCodecContext::channel_layout</a></div><div class="ttdeci">uint64_t channel_layout</div><div class="ttdoc">Audio channel layout. </div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l02338">avcodec.h:2338</a></div></div>
<div class="ttc" id="structAVStream_html_a56f20051fb99339cc588cd3a07ab8c96"><div class="ttname"><a href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">AVStream::codec</a></div><div class="ttdeci">AVCodecContext * codec</div><div class="ttdoc">Codec context associated with this stream. </div><div class="ttdef"><b>Definition:</b> <a href="avformat_8h_source.html#l00896">avformat.h:896</a></div></div>
<div class="ttc" id="structAVFormatContext_html_a0b748d924898b08b89ff4974afd17285"><div class="ttname"><a href="structAVFormatContext.html#a0b748d924898b08b89ff4974afd17285">AVFormatContext::nb_streams</a></div><div class="ttdeci">unsigned int nb_streams</div><div class="ttdoc">Number of elements in AVFormatContext.streams. </div><div class="ttdef"><b>Definition:</b> <a href="avformat_8h_source.html#l01370">avformat.h:1370</a></div></div>
<div class="ttc" id="structFilteringContext_html_a25c500d3728df3a9f904e6d86cf55f11"><div class="ttname"><a href="structFilteringContext.html#a25c500d3728df3a9f904e6d86cf55f11">FilteringContext::buffersrc_ctx</a></div><div class="ttdeci">AVFilterContext * buffersrc_ctx</div><div class="ttdef"><b>Definition:</b> <a href="transcoding_8c_source.html#l00043">transcoding.c:43</a></div></div>
<div class="ttc" id="structAVCodec_html_ac2b97bd3c19686025e1b7d577329c250"><div class="ttname"><a href="structAVCodec.html#ac2b97bd3c19686025e1b7d577329c250">AVCodec::pix_fmts</a></div><div class="ttdeci">enum AVPixelFormat * pix_fmts</div><div class="ttdoc">array of supported pixel formats, or NULL if unknown, array is terminated by -1 </div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l03413">avcodec.h:3413</a></div></div>
<div class="ttc" id="structAVFrame_html_af9920fc3fbfa347b8943ae461b50d18b"><div class="ttname"><a href="structAVFrame.html#af9920fc3fbfa347b8943ae461b50d18b">AVFrame::pict_type</a></div><div class="ttdeci">enum AVPictureType pict_type</div><div class="ttdoc">Picture type of the frame. </div><div class="ttdef"><b>Definition:</b> <a href="frame_8h_source.html#l00252">frame.h:252</a></div></div>
<div class="ttc" id="pixdesc_8h_html"><div class="ttname"><a href="pixdesc_8h.html">pixdesc.h</a></div></div>
<div class="ttc" id="transcoding_8c_html_a54ad76df48ef886861a2f12bc7a9e7e4"><div class="ttname"><a href="transcoding_8c.html#a54ad76df48ef886861a2f12bc7a9e7e4">init_filter</a></div><div class="ttdeci">static int init_filter(FilteringContext *fctx, AVCodecContext *dec_ctx, AVCodecContext *enc_ctx, const char *filter_spec)</div><div class="ttdef"><b>Definition:</b> <a href="transcoding_8c_source.html#l00186">transcoding.c:186</a></div></div>
<div class="ttc" id="group__lavf__encoding_html_ga18b7b10bb5b94c4842de18166bc677cb"><div class="ttname"><a href="group__lavf__encoding.html#ga18b7b10bb5b94c4842de18166bc677cb">avformat_write_header</a></div><div class="ttdeci">av_warn_unused_result int avformat_write_header(AVFormatContext *s, AVDictionary **options)</div><div class="ttdoc">Allocate the stream private data and write the stream header to an output media file. </div></div>
<div class="ttc" id="group__avoptions_html_ga25801ba4fc9b5313eb33ec84e082dd72"><div class="ttname"><a href="group__avoptions.html#ga25801ba4fc9b5313eb33ec84e082dd72">AV_OPT_SEARCH_CHILDREN</a></div><div class="ttdeci">#define AV_OPT_SEARCH_CHILDREN</div><div class="ttdoc">Search in possible children of the given object first. </div><div class="ttdef"><b>Definition:</b> <a href="opt_8h_source.html#l00556">opt.h:556</a></div></div>
<div class="ttc" id="structAVCodecContext_html_a0d8f46461754e8abea0847dcbc41b956"><div class="ttname"><a href="structAVCodecContext.html#a0d8f46461754e8abea0847dcbc41b956">AVCodecContext::width</a></div><div class="ttdeci">int width</div><div class="ttdoc">picture width / height. </div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l01711">avcodec.h:1711</a></div></div>
<div class="ttc" id="avformat_8h_html_ab203c7b734e9c31b7c37d34f6e2c6aef"><div class="ttname"><a href="avformat_8h.html#ab203c7b734e9c31b7c37d34f6e2c6aef">AVFMT_GLOBALHEADER</a></div><div class="ttdeci">#define AVFMT_GLOBALHEADER</div><div class="ttdoc">Format wants global header. </div><div class="ttdef"><b>Definition:</b> <a href="avformat_8h_source.html#l00484">avformat.h:484</a></div></div>
<div class="ttc" id="group__lavu__error_html_gac4f6e109c242c81aeee21868d3f35e12"><div class="ttname"><a href="group__lavu__error.html#gac4f6e109c242c81aeee21868d3f35e12">av_err2str</a></div><div class="ttdeci">#define av_err2str(errnum)</div><div class="ttdoc">Convenience macro, the return value should be used only directly in function arguments but never stan...</div><div class="ttdef"><b>Definition:</b> <a href="error_8h_source.html#l00119">error.h:119</a></div></div>
<div class="ttc" id="group__lavc__decoding_html_ga834bb1b062fbcc2de4cf7fb93f154a3e"><div class="ttname"><a href="group__lavc__decoding.html#ga834bb1b062fbcc2de4cf7fb93f154a3e">avcodec_decode_audio4</a></div><div class="ttdeci">int avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, const AVPacket *avpkt)</div><div class="ttdoc">Decode the audio frame of size avpkt->size from avpkt->data into frame. </div></div>
<div class="ttc" id="structAVFilterGraph_html"><div class="ttname"><a href="structAVFilterGraph.html">AVFilterGraph</a></div><div class="ttdef"><b>Definition:</b> <a href="avfilter_8h_source.html#l00761">avfilter.h:761</a></div></div>
<div class="ttc" id="group__lavu__misc_html_gga9a84bba4713dfced21a1a56163be1f48afdadbd6c4f612c59f6b6c7c6f84fd347"><div class="ttname"><a href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48afdadbd6c4f612c59f6b6c7c6f84fd347">AVMEDIA_TYPE_UNKNOWN</a></div><div class="ttdoc">Usually treated as AVMEDIA_TYPE_DATA. </div><div class="ttdef"><b>Definition:</b> <a href="avutil_8h_source.html#l00192">avutil.h:192</a></div></div>
<div class="ttc" id="structAVCodecContext_html_a0449afd803eb107bd4dbc8b5ea22e363"><div class="ttname"><a href="structAVCodecContext.html#a0449afd803eb107bd4dbc8b5ea22e363">AVCodecContext::height</a></div><div class="ttdeci">int height</div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l01711">avcodec.h:1711</a></div></div>
<div class="ttc" id="structAVFilterInOut_html_a3227857d0b955b639f4950d13e4e6f40"><div class="ttname"><a href="structAVFilterInOut.html#a3227857d0b955b639f4950d13e4e6f40">AVFilterInOut::filter_ctx</a></div><div class="ttdeci">AVFilterContext * filter_ctx</div><div class="ttdoc">filter context associated to this input/output </div><div class="ttdef"><b>Definition:</b> <a href="avfilter_8h_source.html#l00941">avfilter.h:941</a></div></div>
<div class="ttc" id="avfiltergraph_8h_html"><div class="ttname"><a href="avfiltergraph_8h.html">avfiltergraph.h</a></div></div>
<div class="ttc" id="transcoding_8c_html_a05c93a3c60f2fc12e3fb7884be1128d6"><div class="ttname"><a href="transcoding_8c.html#a05c93a3c60f2fc12e3fb7884be1128d6">init_filters</a></div><div class="ttdeci">static int init_filters(void)</div><div class="ttdef"><b>Definition:</b> <a href="transcoding_8c_source.html#l00335">transcoding.c:335</a></div></div>
<div class="ttc" id="structAVStream_html"><div class="ttname"><a href="structAVStream.html">AVStream</a></div><div class="ttdoc">Stream structure. </div><div class="ttdef"><b>Definition:</b> <a href="avformat_8h_source.html#l00877">avformat.h:877</a></div></div>
<div class="ttc" id="structAVFilterInOut_html"><div class="ttname"><a href="structAVFilterInOut.html">AVFilterInOut</a></div><div class="ttdoc">A linked-list of the inputs/outputs of the filter chain. </div><div class="ttdef"><b>Definition:</b> <a href="avfilter_8h_source.html#l00936">avfilter.h:936</a></div></div>
<div class="ttc" id="group__lavu__log__constants_html_gad172eacfed8653e454c6fdcbe53baab3"><div class="ttname"><a href="group__lavu__log__constants.html#gad172eacfed8653e454c6fdcbe53baab3">AV_LOG_INFO</a></div><div class="ttdeci">#define AV_LOG_INFO</div><div class="ttdoc">Standard information. </div><div class="ttdef"><b>Definition:</b> <a href="log_8h_source.html#l00187">log.h:187</a></div></div>
<div class="ttc" id="structFilteringContext_html"><div class="ttname"><a href="structFilteringContext.html">FilteringContext</a></div><div class="ttdef"><b>Definition:</b> <a href="transcoding_8c_source.html#l00041">transcoding.c:41</a></div></div>
<div class="ttc" id="avcodec_8h_html"><div class="ttname"><a href="avcodec_8h.html">avcodec.h</a></div><div class="ttdoc">Libavcodec external API header. </div></div>
<div class="ttc" id="structAVCodecContext_html_a3f99ca3115c44e6d7772c9384faf15e6"><div class="ttname"><a href="structAVCodecContext.html#a3f99ca3115c44e6d7772c9384faf15e6">AVCodecContext::codec_type</a></div><div class="ttdeci">enum AVMediaType codec_type</div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l01540">avcodec.h:1540</a></div></div>
<div class="ttc" id="structAVCodecContext_html_adc5f65d6099fd8339c1580c091777223"><div class="ttname"><a href="structAVCodecContext.html#adc5f65d6099fd8339c1580c091777223">AVCodecContext::codec_id</a></div><div class="ttdeci">enum AVCodecID codec_id</div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l01549">avcodec.h:1549</a></div></div>
<div class="ttc" id="group__lavu__mem_html_ga7c352f4cff02184f005323691375fea9"><div class="ttname"><a href="group__lavu__mem.html#ga7c352f4cff02184f005323691375fea9">av_strdup</a></div><div class="ttdeci">char * av_strdup(const char *s) av_malloc_attrib</div><div class="ttdoc">Duplicate the string s. </div></div>
<div class="ttc" id="structAVCodecContext_html_a8ff0b000c463361e234af48d03aadfc0"><div class="ttname"><a href="structAVCodecContext.html#a8ff0b000c463361e234af48d03aadfc0">AVCodecContext::sample_rate</a></div><div class="ttdeci">int sample_rate</div><div class="ttdoc">samples per second </div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l02287">avcodec.h:2287</a></div></div>
<div class="ttc" id="structAVFormatContext_html_a1e7324262b6b78522e52064daaa7bc87"><div class="ttname"><a href="structAVFormatContext.html#a1e7324262b6b78522e52064daaa7bc87">AVFormatContext::pb</a></div><div class="ttdeci">AVIOContext * pb</div><div class="ttdoc">I/O context. </div><div class="ttdef"><b>Definition:</b> <a href="avformat_8h_source.html#l01356">avformat.h:1356</a></div></div>
<div class="ttc" id="structAVCodecContext_html"><div class="ttname"><a href="structAVCodecContext.html">AVCodecContext</a></div><div class="ttdoc">main external API structure. </div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l01532">avcodec.h:1532</a></div></div>
<div class="ttc" id="group__lavc__decoding_html_ga19a0ca553277f019dd5b0fec6e1f9dca"><div class="ttname"><a href="group__lavc__decoding.html#ga19a0ca553277f019dd5b0fec6e1f9dca">avcodec_find_decoder</a></div><div class="ttdeci">AVCodec * avcodec_find_decoder(enum AVCodecID id)</div><div class="ttdoc">Find a registered decoder with a matching codec ID. </div></div>
<div class="ttc" id="group__lavc__packet_html_ga63d5a489b419bd5d45cfd09091cbcbc2"><div class="ttname"><a href="group__lavc__packet.html#ga63d5a489b419bd5d45cfd09091cbcbc2">av_packet_unref</a></div><div class="ttdeci">void av_packet_unref(AVPacket *pkt)</div><div class="ttdoc">Wipe the packet. </div></div>
<div class="ttc" id="structAVFilter_html"><div class="ttname"><a href="structAVFilter.html">AVFilter</a></div><div class="ttdoc">Filter definition. </div><div class="ttdef"><b>Definition:</b> <a href="avfilter_8h_source.html#l00141">avfilter.h:141</a></div></div>
<div class="ttc" id="structAVFilterInOut_html_a386ff90d40aa22f5612dd5eca734ed48"><div class="ttname"><a href="structAVFilterInOut.html#a386ff90d40aa22f5612dd5eca734ed48">AVFilterInOut::pad_idx</a></div><div class="ttdeci">int pad_idx</div><div class="ttdoc">index of the filt_ctx pad to use for linking </div><div class="ttdef"><b>Definition:</b> <a href="avfilter_8h_source.html#l00944">avfilter.h:944</a></div></div>
<div class="ttc" id="structAVRational_html"><div class="ttname"><a href="structAVRational.html">AVRational</a></div><div class="ttdoc">rational number numerator/denominator </div><div class="ttdef"><b>Definition:</b> <a href="rational_8h_source.html#l00043">rational.h:43</a></div></div>
<div class="ttc" id="transcoding_8c_html_ab6c33edf9a42e2f71594a7cdc6276407"><div class="ttname"><a href="transcoding_8c.html#ab6c33edf9a42e2f71594a7cdc6276407">open_output_file</a></div><div class="ttdeci">static int open_output_file(const char *filename)</div><div class="ttdef"><b>Definition:</b> <a href="transcoding_8c_source.html#l00086">transcoding.c:86</a></div></div>
<div class="ttc" id="group__lavu__misc_html_ga9a84bba4713dfced21a1a56163be1f48"><div class="ttname"><a href="group__lavu__misc.html#ga9a84bba4713dfced21a1a56163be1f48">AVMediaType</a></div><div class="ttdeci">AVMediaType</div><div class="ttdef"><b>Definition:</b> <a href="avutil_8h_source.html#l00191">avutil.h:191</a></div></div>
<div class="ttc" id="group__lavc__core_html_ga11f785a188d7d9df71621001465b0f1d"><div class="ttname"><a href="group__lavc__core.html#ga11f785a188d7d9df71621001465b0f1d">avcodec_open2</a></div><div class="ttdeci">int avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)</div><div class="ttdoc">Initialize the AVCodecContext to use the given AVCodec. </div></div>
<div class="ttc" id="group__lavf__core_html_gac2990b13b68e831a408fce8e1d0d6445"><div class="ttname"><a href="group__lavf__core.html#gac2990b13b68e831a408fce8e1d0d6445">avformat_free_context</a></div><div class="ttdeci">void avformat_free_context(AVFormatContext *s)</div><div class="ttdoc">Free an AVFormatContext and all its streams. </div></div>
<div class="ttc" id="group__lavf__decoding_html_ga4fdb3084415a82e3810de6ee60e46a61"><div class="ttname"><a href="group__lavf__decoding.html#ga4fdb3084415a82e3810de6ee60e46a61">av_read_frame</a></div><div class="ttdeci">int av_read_frame(AVFormatContext *s, AVPacket *pkt)</div><div class="ttdoc">Return the next frame of a stream. </div></div>
<div class="ttc" id="structAVFilterInOut_html_a88afecac258f51aab7e9a9db9e7a4d58"><div class="ttname"><a href="structAVFilterInOut.html#a88afecac258f51aab7e9a9db9e7a4d58">AVFilterInOut::name</a></div><div class="ttdeci">char * name</div><div class="ttdoc">unique name for this input/output in the list </div><div class="ttdef"><b>Definition:</b> <a href="avfilter_8h_source.html#l00938">avfilter.h:938</a></div></div>
<div class="ttc" id="group__lavu__mem_html_gab62b093b46dce5fe4e3e1d58bdb255da"><div class="ttname"><a href="group__lavu__mem.html#gab62b093b46dce5fe4e3e1d58bdb255da">av_malloc_array</a></div><div class="ttdeci">static void * av_malloc_array(size_t nmemb, size_t size)</div><div class="ttdef"><b>Definition:</b> <a href="mem_8h_source.html#l00093">mem.h:93</a></div></div>
<div class="ttc" id="group__lavc__core_html_ga9ed82634c59b339786575827c47a8f68"><div class="ttname"><a href="group__lavc__core.html#ga9ed82634c59b339786575827c47a8f68">AV_CODEC_FLAG_GLOBAL_HEADER</a></div><div class="ttdeci">#define AV_CODEC_FLAG_GLOBAL_HEADER</div><div class="ttdoc">Place global headers in extradata instead of every keyframe. </div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l00783">avcodec.h:783</a></div></div>
<div class="ttc" id="avformat_8h_html"><div class="ttname"><a href="avformat_8h.html">avformat.h</a></div><div class="ttdoc">Main libavformat public API header. </div></div>
<div class="ttc" id="group__lavfi_html_ga6e1c2931e15eb4283c59c6ccc8b83919"><div class="ttname"><a href="group__lavfi.html#ga6e1c2931e15eb4283c59c6ccc8b83919">avfilter_inout_alloc</a></div><div class="ttdeci">AVFilterInOut * avfilter_inout_alloc(void)</div><div class="ttdoc">Allocate a single AVFilterInOut entry. </div></div>
<div class="ttc" id="avformat_8h_html_a752cce390d480521919aa5d8be24ac0b"><div class="ttname"><a href="avformat_8h.html#a752cce390d480521919aa5d8be24ac0b">AVFMT_NOFILE</a></div><div class="ttdeci">#define AVFMT_NOFILE</div><div class="ttdoc">Demuxer will use avio_open, no opened file should be provided by the caller. </div><div class="ttdef"><b>Definition:</b> <a href="avformat_8h_source.html#l00477">avformat.h:477</a></div></div>
<div class="ttc" id="group__lavf__decoding_html_gad42172e27cddafb81096939783b157bb"><div class="ttname"><a href="group__lavf__decoding.html#gad42172e27cddafb81096939783b157bb">avformat_find_stream_info</a></div><div class="ttdeci">int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)</div><div class="ttdoc">Read packets of a media file to get stream information. </div></div>
<div class="ttc" id="filtering__audio_8c_html_ac2bf6798f37e95d3d2ff2d44e4ab3c12"><div class="ttname"><a href="filtering__audio_8c.html#ac2bf6798f37e95d3d2ff2d44e4ab3c12">dec_ctx</a></div><div class="ttdeci">static AVCodecContext * dec_ctx</div><div class="ttdef"><b>Definition:</b> <a href="filtering__audio_8c_source.html#l00044">filtering_audio.c:44</a></div></div>
<div class="ttc" id="group__lavc__packet_html_gac9cb9756175b96e7441575803757fb73"><div class="ttname"><a href="group__lavc__packet.html#gac9cb9756175b96e7441575803757fb73">av_init_packet</a></div><div class="ttdeci">void av_init_packet(AVPacket *pkt)</div><div class="ttdoc">Initialize optional fields of a packet with default values. </div></div>
<div class="ttc" id="structAVRational_html_aee46bdac67d965ac0a4204e753f910c3"><div class="ttname"><a href="structAVRational.html#aee46bdac67d965ac0a4204e753f910c3">AVRational::den</a></div><div class="ttdeci">int den</div><div class="ttdoc">denominator </div><div class="ttdef"><b>Definition:</b> <a href="rational_8h_source.html#l00045">rational.h:45</a></div></div>
<div class="ttc" id="transcoding_8c_html_a255192428438daf73b9f8060c0815712"><div class="ttname"><a href="transcoding_8c.html#a255192428438daf73b9f8060c0815712">filter_encode_write_frame</a></div><div class="ttdeci">static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index)</div><div class="ttdef"><b>Definition:</b> <a href="transcoding_8c_source.html#l00401">transcoding.c:401</a></div></div>
<div class="ttc" id="group__lavfi__buffersrc_html_ga73ed90c3c3407f36e54d65f91faaaed9"><div class="ttname"><a href="group__lavfi__buffersrc.html#ga73ed90c3c3407f36e54d65f91faaaed9">av_buffersrc_add_frame_flags</a></div><div class="ttdeci">av_warn_unused_result int av_buffersrc_add_frame_flags(AVFilterContext *buffer_src, AVFrame *frame, int flags)</div><div class="ttdoc">Add a frame to the buffer source. </div></div>
<div class="ttc" id="group__lavu__error_html_ga4ebaa288c7684a26a591c501208910e4"><div class="ttname"><a href="group__lavu__error.html#ga4ebaa288c7684a26a591c501208910e4">AVERROR_UNKNOWN</a></div><div class="ttdeci">#define AVERROR_UNKNOWN</div><div class="ttdoc">Unknown error, typically from an external library. </div><div class="ttdef"><b>Definition:</b> <a href="error_8h_source.html#l00071">error.h:71</a></div></div>
<div class="ttc" id="group__lavf__decoding_html_gae804b99aec044690162b8b9b110236a4"><div class="ttname"><a href="group__lavf__decoding.html#gae804b99aec044690162b8b9b110236a4">avformat_close_input</a></div><div class="ttdeci">void avformat_close_input(AVFormatContext **s)</div><div class="ttdoc">Close an opened input AVFormatContext. </div></div>
<div class="ttc" id="structAVCodecContext_html_ac1e6c2cd1269caa7570575725c682a49"><div class="ttname"><a href="structAVCodecContext.html#ac1e6c2cd1269caa7570575725c682a49">AVCodecContext::channels</a></div><div class="ttdeci">int channels</div><div class="ttdoc">number of audio channels </div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l02288">avcodec.h:2288</a></div></div>
<div class="ttc" id="group__lavf__decoding_html_ga31d601155e9035d5b0e7efedc894ee49"><div class="ttname"><a href="group__lavf__decoding.html#ga31d601155e9035d5b0e7efedc894ee49">avformat_open_input</a></div><div class="ttdeci">int avformat_open_input(AVFormatContext **ps, const char *url, AVInputFormat *fmt, AVDictionary **options)</div><div class="ttdoc">Open an input stream and read the header. </div></div>
<div class="ttc" id="group__lavfi_html_ga34f4ff420bd58da6747a3ff1fbedd001"><div class="ttname"><a href="group__lavfi.html#ga34f4ff420bd58da6747a3ff1fbedd001">avfilter_graph_parse_ptr</a></div><div class="ttdeci">int avfilter_graph_parse_ptr(AVFilterGraph *graph, const char *filters, AVFilterInOut **inputs, AVFilterInOut **outputs, void *log_ctx)</div><div class="ttdoc">Add a graph described by a string to a graph. </div></div>
<div class="ttc" id="structAVFilterContext_html"><div class="ttname"><a href="structAVFilterContext.html">AVFilterContext</a></div><div class="ttdoc">An instance of a filter. </div><div class="ttdef"><b>Definition:</b> <a href="avfilter_8h_source.html#l00304">avfilter.h:304</a></div></div>
<div class="ttc" id="group__channel__mask__c_html_gacb84f3e93a583e1f84a5283162a606a2"><div class="ttname"><a href="group__channel__mask__c.html#gacb84f3e93a583e1f84a5283162a606a2">av_get_default_channel_layout</a></div><div class="ttdeci">int64_t av_get_default_channel_layout(int nb_channels)</div><div class="ttdoc">Return default channel layout for a given number of channels. </div></div>
<div class="ttc" id="group__lavf__encoding_html_ga7f14007e7dc8f481f054b21614dfec13"><div class="ttname"><a href="group__lavf__encoding.html#ga7f14007e7dc8f481f054b21614dfec13">av_write_trailer</a></div><div class="ttdeci">int av_write_trailer(AVFormatContext *s)</div><div class="ttdoc">Write the stream trailer to an output media file and free the file private data. </div></div>
<div class="ttc" id="transcoding_8c_html_a3c04138a5bfe5d72780bb7e82a18e627"><div class="ttname"><a href="transcoding_8c.html#a3c04138a5bfe5d72780bb7e82a18e627">main</a></div><div class="ttdeci">int main(int argc, char **argv)</div><div class="ttdef"><b>Definition:</b> <a href="transcoding_8c_source.html#l00465">transcoding.c:465</a></div></div>
<div class="ttc" id="group__lavu__misc_html_gga9a84bba4713dfced21a1a56163be1f48ac1a46f59be5c6c2d3412ab172d6b8cf5"><div class="ttname"><a href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48ac1a46f59be5c6c2d3412ab172d6b8cf5">AVMEDIA_TYPE_VIDEO</a></div><div class="ttdef"><b>Definition:</b> <a href="avutil_8h_source.html#l00193">avutil.h:193</a></div></div>
<div class="ttc" id="group__lavu__log__constants_html_ga96970a2980bf6ad28cd403e7dc52d6c5"><div class="ttname"><a href="group__lavu__log__constants.html#ga96970a2980bf6ad28cd403e7dc52d6c5">AV_LOG_FATAL</a></div><div class="ttdeci">#define AV_LOG_FATAL</div><div class="ttdoc">Something went wrong and recovery is not possible. </div><div class="ttdef"><b>Definition:</b> <a href="log_8h_source.html#l00170">log.h:170</a></div></div>
<div class="ttc" id="structAVCodec_html_aac19f4c45370f715412ad5c7b78daacf"><div class="ttname"><a href="structAVCodec.html#aac19f4c45370f715412ad5c7b78daacf">AVCodec::sample_fmts</a></div><div class="ttdeci">enum AVSampleFormat * sample_fmts</div><div class="ttdoc">array of supported sample formats, or NULL if unknown, array is terminated by -1 </div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l03415">avcodec.h:3415</a></div></div>
<div class="ttc" id="structFilteringContext_html_a4476c9e6fb492172c909ae4a47c47233"><div class="ttname"><a href="structFilteringContext.html#a4476c9e6fb492172c909ae4a47c47233">FilteringContext::buffersink_ctx</a></div><div class="ttdeci">AVFilterContext * buffersink_ctx</div><div class="ttdef"><b>Definition:</b> <a href="transcoding_8c_source.html#l00042">transcoding.c:42</a></div></div>
<div class="ttc" id="structAVPacket_html_a0d1cb9b5a32b00fb6edc81ea3aae2a49"><div class="ttname"><a href="structAVPacket.html#a0d1cb9b5a32b00fb6edc81ea3aae2a49">AVPacket::stream_index</a></div><div class="ttdeci">int stream_index</div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l01469">avcodec.h:1469</a></div></div>
<div class="ttc" id="structAVStream_html_a9db755451f14e2bf590d4b85d82b32e6"><div class="ttname"><a href="structAVStream.html#a9db755451f14e2bf590d4b85d82b32e6">AVStream::time_base</a></div><div class="ttdeci">AVRational time_base</div><div class="ttdoc">This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...</div><div class="ttdef"><b>Definition:</b> <a href="avformat_8h_source.html#l00919">avformat.h:919</a></div></div>
<div class="ttc" id="group__lavfi_html_ga9c7f1b28f648fc72f2822ff7f14a007a"><div class="ttname"><a href="group__lavfi.html#ga9c7f1b28f648fc72f2822ff7f14a007a">avfilter_get_by_name</a></div><div class="ttdeci">AVFilter * avfilter_get_by_name(const char *name)</div><div class="ttdoc">Get a filter definition matching the given name. </div></div>
<div class="ttc" id="group__lavfi__buffersink_html_ga653228f4cbca427c654d844a5fc59cfa"><div class="ttname"><a href="group__lavfi__buffersink.html#ga653228f4cbca427c654d844a5fc59cfa">av_buffersink_get_frame</a></div><div class="ttdeci">int av_buffersink_get_frame(AVFilterContext *ctx, AVFrame *frame)</div><div class="ttdoc">Get a frame with filtered data from sink and put it in frame. </div></div>
<div class="ttc" id="structAVPacket_html"><div class="ttname"><a href="structAVPacket.html">AVPacket</a></div><div class="ttdoc">This structure stores compressed data. </div><div class="ttdef"><b>Definition:</b> <a href="avcodec_8h_source.html#l01444">avcodec.h:1444</a></div></div>
<div class="ttc" id="group__lavf__core_html_ga917265caec45ef5a0646356ed1a507e3"><div class="ttname"><a href="group__lavf__core.html#ga917265caec45ef5a0646356ed1a507e3">av_register_all</a></div><div class="ttdeci">void av_register_all(void)</div><div class="ttdoc">Initialize libavformat and register all the muxers, demuxers and protocols. </div></div>
<div class="ttc" id="avio_8h_html_ae118a1f37f1e48617609ead9910aac15"><div class="ttname"><a href="avio_8h.html#ae118a1f37f1e48617609ead9910aac15">avio_closep</a></div><div class="ttdeci">int avio_closep(AVIOContext **s)</div><div class="ttdoc">Close the resource accessed by the AVIOContext *s, free it and set the pointer pointing to it to NULL...</div></div>
<div class="ttc" id="transcoding_8c_html_aad50129a22f90b00b5d5cc7551175093"><div class="ttname"><a href="transcoding_8c.html#aad50129a22f90b00b5d5cc7551175093">ofmt_ctx</a></div><div class="ttdeci">static AVFormatContext * ofmt_ctx</div><div class="ttdef"><b>Definition:</b> <a href="transcoding_8c_source.html#l00040">transcoding.c:40</a></div></div>
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