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<div class="title">libavutil/avutil.h File Reference</div> </div>
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<p>external API header
<a href="#details">More...</a></p>
<div class="textblock"><code>#include "<a class="el" href="common_8h_source.html">common.h</a>"</code><br/>
<code>#include "<a class="el" href="error_8h_source.html">error.h</a>"</code><br/>
<code>#include "<a class="el" href="rational_8h_source.html">rational.h</a>"</code><br/>
<code>#include "<a class="el" href="libavutil_2version_8h_source.html">version.h</a>"</code><br/>
<code>#include "<a class="el" href="macros_8h_source.html">macros.h</a>"</code><br/>
<code>#include "<a class="el" href="mathematics_8h_source.html">mathematics.h</a>"</code><br/>
<code>#include "<a class="el" href="log_8h_source.html">log.h</a>"</code><br/>
<code>#include "<a class="el" href="pixfmt_8h_source.html">pixfmt.h</a>"</code><br/>
</div>
<p><a href="avutil_8h_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="define-members"></a>
Defines</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__enc.html#ga979d8e4b4947c924436fcc3b62cafea7">FF_LAMBDA_SHIFT</a>   7</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__enc.html#ga44d4d51371d07ef43eb009ef29a0b534">FF_LAMBDA_SCALE</a>   (1<<<a class="el" href="group__lavu__enc.html#ga979d8e4b4947c924436fcc3b62cafea7">FF_LAMBDA_SHIFT</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__enc.html#gad6ce86405f7381daad36ccf516b4da98">FF_QP2LAMBDA</a>   118</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">factor to convert from H.263 QP to lambda <a href="group__lavu__enc.html#gad6ce86405f7381daad36ccf516b4da98"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__enc.html#gabc22a7ffbd4a73e81dd69e8c45e6cf8c">FF_LAMBDA_MAX</a>   (256*128-1)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__enc.html#gab1026a3e2eb8430ec938fffdc1bb2238">FF_QUALITY_SCALE</a>   <a class="el" href="group__lavu__enc.html#ga44d4d51371d07ef43eb009ef29a0b534">FF_LAMBDA_SCALE</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__time.html#ga2eaefe702f95f619ea6f2d08afa01be1">AV_NOPTS_VALUE</a>   ((int64_t)UINT64_C(0x8000000000000000))</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Undefined timestamp value. <a href="group__lavu__time.html#ga2eaefe702f95f619ea6f2d08afa01be1"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__time.html#gaa11ed202b70e1f52bac809811a910e2a">AV_TIME_BASE</a>   1000000</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Internal time base represented as integer. <a href="group__lavu__time.html#gaa11ed202b70e1f52bac809811a910e2a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__time.html#gafd07a13a4ddaa6015275cad6022d9ee3">AV_TIME_BASE_Q</a>   (<a class="el" href="structAVRational.html">AVRational</a>){1, <a class="el" href="group__lavu__time.html#gaa11ed202b70e1f52bac809811a910e2a">AV_TIME_BASE</a>}</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Internal time base represented as fractional value. <a href="group__lavu__time.html#gafd07a13a4ddaa6015275cad6022d9ee3"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__misc.html#gaddb1ee4dba6de5845eda3e9e1e740366">av_int_list_length</a>(list, term)   <a class="el" href="group__lavu__misc.html#ga7894e9b1ec8844685bc9101779c7d533">av_int_list_length_for_size</a>(sizeof(*(list)), list, term)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Compute the length of an integer list. <a href="group__lavu__misc.html#gaddb1ee4dba6de5845eda3e9e1e740366"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="enum-members"></a>
Enumerations</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__misc.html#ga9a84bba4713dfced21a1a56163be1f48">AVMediaType</a> { <br/>
  <a class="el" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48afdadbd6c4f612c59f6b6c7c6f84fd347">AVMEDIA_TYPE_UNKNOWN</a> = -1,
<a class="el" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48ac1a46f59be5c6c2d3412ab172d6b8cf5">AVMEDIA_TYPE_VIDEO</a>,
<a class="el" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48a7b4e33b8f30ac94d34ce8d9f7c33927a">AVMEDIA_TYPE_AUDIO</a>,
<a class="el" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48ae3df4d77c6908fb626293c2fed215d52">AVMEDIA_TYPE_DATA</a>,
<br/>
  <a class="el" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48aa64a67386a9c53360744b86e4707b831">AVMEDIA_TYPE_SUBTITLE</a>,
<a class="el" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48a2d09f16df8631e64e8fa566142cdc99d">AVMEDIA_TYPE_ATTACHMENT</a>,
<a class="el" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48a8e220e09ef38f26963e8e2ec731fb7d9">AVMEDIA_TYPE_NB</a>
<br/>
}</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__picture.html#gae6cbcab1f70d8e476757f1c1f5a0a78e">AVPictureType</a> { <br/>
  <a class="el" href="group__lavu__picture.html#ggae6cbcab1f70d8e476757f1c1f5a0a78ea33183189d771e3325ccdd36fa980b6f6">AV_PICTURE_TYPE_NONE</a> = 0,
<a class="el" href="group__lavu__picture.html#ggae6cbcab1f70d8e476757f1c1f5a0a78ea02be39f151a8ace7a65c86e13053e817">AV_PICTURE_TYPE_I</a>,
<a class="el" href="group__lavu__picture.html#ggae6cbcab1f70d8e476757f1c1f5a0a78eaa6fc0479507a03f173f07fc75dab2193">AV_PICTURE_TYPE_P</a>,
<a class="el" href="group__lavu__picture.html#ggae6cbcab1f70d8e476757f1c1f5a0a78ead22f8968e99bc48897c3f4ac29e82dae">AV_PICTURE_TYPE_B</a>,
<br/>
  <a class="el" href="group__lavu__picture.html#ggae6cbcab1f70d8e476757f1c1f5a0a78eac279237c3b09bb9f7ece0675658e65ad">AV_PICTURE_TYPE_S</a>,
<a class="el" href="group__lavu__picture.html#ggae6cbcab1f70d8e476757f1c1f5a0a78eaa7199b8035cf5a076a05a7fcf6dfc7fe">AV_PICTURE_TYPE_SI</a>,
<a class="el" href="group__lavu__picture.html#ggae6cbcab1f70d8e476757f1c1f5a0a78ea83789bae2515a1ce384a88f074244e4e">AV_PICTURE_TYPE_SP</a>,
<a class="el" href="group__lavu__picture.html#ggae6cbcab1f70d8e476757f1c1f5a0a78ea71f9f194b0cbe86778cb6df41b867cf3">AV_PICTURE_TYPE_BI</a>
<br/>
}</td></tr>
<tr><td colspan="2"><h2><a name="func-members"></a>
Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__ver.html#ga9a979c78d33d8767b51952f7f5c61541">avutil_version</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the LIBAVUTIL_VERSION_INT constant. <a href="group__lavu__ver.html#ga9a979c78d33d8767b51952f7f5c61541"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__ver.html#gaf75e78eac0a55a8c3736f89b018a5687">avutil_configuration</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the libavutil build-time configuration. <a href="group__lavu__ver.html#gaf75e78eac0a55a8c3736f89b018a5687"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__ver.html#ga88957e92f27b9d3fca0ec8cf43303b72">avutil_license</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the libavutil license. <a href="group__lavu__ver.html#ga88957e92f27b9d3fca0ec8cf43303b72"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__misc.html#gaf21645cfa855b2caf9699d7dc7b2d08e">av_get_media_type_string</a> (enum <a class="el" href="group__lavu__misc.html#ga9a84bba4713dfced21a1a56163be1f48">AVMediaType</a> media_type)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return a string describing the media_type enum, NULL if media_type is unknown. <a href="group__lavu__misc.html#gaf21645cfa855b2caf9699d7dc7b2d08e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">char </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__picture.html#gacbf2ea8b2b89924c890ef8ec10a3d922">av_get_picture_type_char</a> (enum <a class="el" href="group__lavu__picture.html#gae6cbcab1f70d8e476757f1c1f5a0a78e">AVPictureType</a> pict_type)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return a single letter to describe the given picture type pict_type. <a href="group__lavu__picture.html#gacbf2ea8b2b89924c890ef8ec10a3d922"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__misc.html#ga87458dccf9ab1444c363df5fa8a3f28f">av_x_if_null</a> (const void *p, const void *x)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return x default pointer in case p is NULL. <a href="group__lavu__misc.html#ga87458dccf9ab1444c363df5fa8a3f28f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__misc.html#ga7894e9b1ec8844685bc9101779c7d533">av_int_list_length_for_size</a> (unsigned elsize, const void *list, uint64_t term) <a class="el" href="attributes_8h.html#adc7fd5bb40d84900a3a30ef3318020c2">av_pure</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Compute the length of an integer list. <a href="group__lavu__misc.html#ga7894e9b1ec8844685bc9101779c7d533"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">FILE * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__misc.html#ga553b85a36da32c041738a89aa61f9fbd">av_fopen_utf8</a> (const char *path, const char *mode)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Open a file using a UTF-8 filename. <a href="group__lavu__misc.html#ga553b85a36da32c041738a89aa61f9fbd"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="structAVRational.html">AVRational</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__misc.html#gab889104afd2e874f9dd2b3b78b04f3f2">av_get_time_base_q</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the fractional representation of the internal time base. <a href="group__lavu__misc.html#gab889104afd2e874f9dd2b3b78b04f3f2"></a><br/></td></tr>
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<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>external API header </p>
<p>Definition in file <a class="el" href="avutil_8h_source.html">avutil.h</a>.</p>
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