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<a href="#pub-attribs">Data Fields</a> </div>
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<div class="title">AVCodecParameters Struct Reference<div class="ingroups"><a class="el" href="group__libavc.html">libavcodec</a> » <a class="el" href="group__lavc__core.html">Core functions/structures.</a></div></div> </div>
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<p>This struct describes the properties of an encoded stream.
<a href="structAVCodecParameters.html#details">More...</a></p>
<p><code>#include <<a class="el" href="avcodec_8h_source.html">libavcodec/avcodec.h</a>></code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
Data Fields</h2></td></tr>
<tr class="memitem:a58369c3a8a986935b572df5aa6361ce2"><td class="memItemLeft" align="right" valign="top">enum <a class="el" href="group__lavu__misc.html#ga9a84bba4713dfced21a1a56163be1f48">AVMediaType</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a58369c3a8a986935b572df5aa6361ce2">codec_type</a></td></tr>
<tr class="memdesc:a58369c3a8a986935b572df5aa6361ce2"><td class="mdescLeft"> </td><td class="mdescRight">General type of the encoded data. <a href="#a58369c3a8a986935b572df5aa6361ce2">More...</a><br /></td></tr>
<tr class="separator:a58369c3a8a986935b572df5aa6361ce2"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9f76f2475ef24ff4c9771dd53072d040"><td class="memItemLeft" align="right" valign="top">enum <a class="el" href="group__lavc__core.html#gaadca229ad2c20e060a14fec08a5cc7ce">AVCodecID</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a9f76f2475ef24ff4c9771dd53072d040">codec_id</a></td></tr>
<tr class="memdesc:a9f76f2475ef24ff4c9771dd53072d040"><td class="mdescLeft"> </td><td class="mdescRight">Specific type of the encoded data (the codec used). <a href="#a9f76f2475ef24ff4c9771dd53072d040">More...</a><br /></td></tr>
<tr class="separator:a9f76f2475ef24ff4c9771dd53072d040"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9b6f7d220d100ba73defab295623356b"><td class="memItemLeft" align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a9b6f7d220d100ba73defab295623356b">codec_tag</a></td></tr>
<tr class="memdesc:a9b6f7d220d100ba73defab295623356b"><td class="mdescLeft"> </td><td class="mdescRight">Additional information about the codec (corresponds to the AVI FOURCC). <a href="#a9b6f7d220d100ba73defab295623356b">More...</a><br /></td></tr>
<tr class="separator:a9b6f7d220d100ba73defab295623356b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9befe0b86412646017afb0051d144d13"><td class="memItemLeft" align="right" valign="top">uint8_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a9befe0b86412646017afb0051d144d13">extradata</a></td></tr>
<tr class="memdesc:a9befe0b86412646017afb0051d144d13"><td class="mdescLeft"> </td><td class="mdescRight">Extra binary data needed for initializing the decoder, codec-dependent. <a href="#a9befe0b86412646017afb0051d144d13">More...</a><br /></td></tr>
<tr class="separator:a9befe0b86412646017afb0051d144d13"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a060002ff641fb6c358517df941e9c4c5"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a060002ff641fb6c358517df941e9c4c5">extradata_size</a></td></tr>
<tr class="memdesc:a060002ff641fb6c358517df941e9c4c5"><td class="mdescLeft"> </td><td class="mdescRight">Size of the extradata content in bytes. <a href="#a060002ff641fb6c358517df941e9c4c5">More...</a><br /></td></tr>
<tr class="separator:a060002ff641fb6c358517df941e9c4c5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:abee943e65d98f9763fa6602a356e774f"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#abee943e65d98f9763fa6602a356e774f">format</a></td></tr>
<tr class="separator:abee943e65d98f9763fa6602a356e774f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a5268fcf4ae8ed27edef54f836b926d93"><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a5268fcf4ae8ed27edef54f836b926d93">bit_rate</a></td></tr>
<tr class="memdesc:a5268fcf4ae8ed27edef54f836b926d93"><td class="mdescLeft"> </td><td class="mdescRight">The average bitrate of the encoded data (in bits per second). <a href="#a5268fcf4ae8ed27edef54f836b926d93">More...</a><br /></td></tr>
<tr class="separator:a5268fcf4ae8ed27edef54f836b926d93"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3866500f51fabfa90faeae894c6e955c"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a3866500f51fabfa90faeae894c6e955c">bits_per_coded_sample</a></td></tr>
<tr class="memdesc:a3866500f51fabfa90faeae894c6e955c"><td class="mdescLeft"> </td><td class="mdescRight">The number of bits per sample in the codedwords. <a href="#a3866500f51fabfa90faeae894c6e955c">More...</a><br /></td></tr>
<tr class="separator:a3866500f51fabfa90faeae894c6e955c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a796f5860107695d36c3a7fb30453da79"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a796f5860107695d36c3a7fb30453da79">bits_per_raw_sample</a></td></tr>
<tr class="memdesc:a796f5860107695d36c3a7fb30453da79"><td class="mdescLeft"> </td><td class="mdescRight">This is the number of valid bits in each output sample. <a href="#a796f5860107695d36c3a7fb30453da79">More...</a><br /></td></tr>
<tr class="separator:a796f5860107695d36c3a7fb30453da79"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6b13b8a226ed923085718cd1323bfcb5"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a6b13b8a226ed923085718cd1323bfcb5">profile</a></td></tr>
<tr class="memdesc:a6b13b8a226ed923085718cd1323bfcb5"><td class="mdescLeft"> </td><td class="mdescRight">Codec-specific bitstream restrictions that the stream conforms to. <a href="#a6b13b8a226ed923085718cd1323bfcb5">More...</a><br /></td></tr>
<tr class="separator:a6b13b8a226ed923085718cd1323bfcb5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a26ae48eeaf8b315eca03b207e11edc7c"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a26ae48eeaf8b315eca03b207e11edc7c">level</a></td></tr>
<tr class="separator:a26ae48eeaf8b315eca03b207e11edc7c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a51639f88aef9f4f283f538a0c033fbb8"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a51639f88aef9f4f283f538a0c033fbb8">width</a></td></tr>
<tr class="memdesc:a51639f88aef9f4f283f538a0c033fbb8"><td class="mdescLeft"> </td><td class="mdescRight">Video only. <a href="#a51639f88aef9f4f283f538a0c033fbb8">More...</a><br /></td></tr>
<tr class="separator:a51639f88aef9f4f283f538a0c033fbb8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1ec57ee84f19cf65d00eaa4d2a2253ce"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a1ec57ee84f19cf65d00eaa4d2a2253ce">height</a></td></tr>
<tr class="separator:a1ec57ee84f19cf65d00eaa4d2a2253ce"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a7d6ef91120ffe80040c699e747a1ad68"><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="structAVCodecParameters.html#a7d6ef91120ffe80040c699e747a1ad68">sample_aspect_ratio</a></td></tr>
<tr class="memdesc:a7d6ef91120ffe80040c699e747a1ad68"><td class="mdescLeft"> </td><td class="mdescRight">Video only. <a href="#a7d6ef91120ffe80040c699e747a1ad68">More...</a><br /></td></tr>
<tr class="separator:a7d6ef91120ffe80040c699e747a1ad68"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a153946872548cd56132907b93f05f9aa"><td class="memItemLeft" align="right" valign="top">enum <a class="el" href="group__lavc__core.html#ga957ef25581a6b3c98589817b1cbed02c">AVFieldOrder</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a153946872548cd56132907b93f05f9aa">field_order</a></td></tr>
<tr class="memdesc:a153946872548cd56132907b93f05f9aa"><td class="mdescLeft"> </td><td class="mdescRight">Video only. <a href="#a153946872548cd56132907b93f05f9aa">More...</a><br /></td></tr>
<tr class="separator:a153946872548cd56132907b93f05f9aa"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:afa6744d9b8766db47a5ff7bddf0f2404"><td class="memItemLeft" align="right" valign="top">enum <a class="el" href="pixfmt_8h.html#a3da0bf691418bc22c4bcbe6583ad589a">AVColorRange</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#afa6744d9b8766db47a5ff7bddf0f2404">color_range</a></td></tr>
<tr class="memdesc:afa6744d9b8766db47a5ff7bddf0f2404"><td class="mdescLeft"> </td><td class="mdescRight">Video only. <a href="#afa6744d9b8766db47a5ff7bddf0f2404">More...</a><br /></td></tr>
<tr class="separator:afa6744d9b8766db47a5ff7bddf0f2404"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa884cae3fd16b30c61201a686664f96b"><td class="memItemLeft" align="right" valign="top">enum <a class="el" href="pixfmt_8h.html#ad384ee5a840bafd73daef08e6d9cafe7">AVColorPrimaries</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#aa884cae3fd16b30c61201a686664f96b">color_primaries</a></td></tr>
<tr class="separator:aa884cae3fd16b30c61201a686664f96b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac25ed8394e1efdbbcf28932ff0020893"><td class="memItemLeft" align="right" valign="top">enum <a class="el" href="pixfmt_8h.html#ad4791ea14975f098b649db7fcd731ce6">AVColorTransferCharacteristic</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#ac25ed8394e1efdbbcf28932ff0020893">color_trc</a></td></tr>
<tr class="separator:ac25ed8394e1efdbbcf28932ff0020893"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a020398a4963e932853cefc169d90456d"><td class="memItemLeft" align="right" valign="top">enum <a class="el" href="pixfmt_8h.html#aff71a069509a1ad3ff54d53a1c894c85">AVColorSpace</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a020398a4963e932853cefc169d90456d">color_space</a></td></tr>
<tr class="separator:a020398a4963e932853cefc169d90456d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae4c7ac718a75adb31b5f2076a02fdedf"><td class="memItemLeft" align="right" valign="top">enum <a class="el" href="pixfmt_8h.html#a1f86ed1b6a420faccacf77c98db6c1ff">AVChromaLocation</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#ae4c7ac718a75adb31b5f2076a02fdedf">chroma_location</a></td></tr>
<tr class="separator:ae4c7ac718a75adb31b5f2076a02fdedf"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8aeefb8cf55cb147f930424c488f9693"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a8aeefb8cf55cb147f930424c488f9693">video_delay</a></td></tr>
<tr class="memdesc:a8aeefb8cf55cb147f930424c488f9693"><td class="mdescLeft"> </td><td class="mdescRight">Video only. <a href="#a8aeefb8cf55cb147f930424c488f9693">More...</a><br /></td></tr>
<tr class="separator:a8aeefb8cf55cb147f930424c488f9693"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a18e0af4b263443a6c4d2d5304dbd537e"><td class="memItemLeft" align="right" valign="top">uint64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a18e0af4b263443a6c4d2d5304dbd537e">channel_layout</a></td></tr>
<tr class="memdesc:a18e0af4b263443a6c4d2d5304dbd537e"><td class="mdescLeft"> </td><td class="mdescRight">Audio only. <a href="#a18e0af4b263443a6c4d2d5304dbd537e">More...</a><br /></td></tr>
<tr class="separator:a18e0af4b263443a6c4d2d5304dbd537e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4d418b807283607a231d2d8cdf559f00"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a4d418b807283607a231d2d8cdf559f00">channels</a></td></tr>
<tr class="memdesc:a4d418b807283607a231d2d8cdf559f00"><td class="mdescLeft"> </td><td class="mdescRight">Audio only. <a href="#a4d418b807283607a231d2d8cdf559f00">More...</a><br /></td></tr>
<tr class="separator:a4d418b807283607a231d2d8cdf559f00"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:abfc9b0aa975206f7e77a125e6b78536e"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#abfc9b0aa975206f7e77a125e6b78536e">sample_rate</a></td></tr>
<tr class="memdesc:abfc9b0aa975206f7e77a125e6b78536e"><td class="mdescLeft"> </td><td class="mdescRight">Audio only. <a href="#abfc9b0aa975206f7e77a125e6b78536e">More...</a><br /></td></tr>
<tr class="separator:abfc9b0aa975206f7e77a125e6b78536e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a786f81429bb25853af449fe5737bf2c7"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a786f81429bb25853af449fe5737bf2c7">block_align</a></td></tr>
<tr class="memdesc:a786f81429bb25853af449fe5737bf2c7"><td class="mdescLeft"> </td><td class="mdescRight">Audio only. <a href="#a786f81429bb25853af449fe5737bf2c7">More...</a><br /></td></tr>
<tr class="separator:a786f81429bb25853af449fe5737bf2c7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0ce9631123719789e4c7b0c23c66d534"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a0ce9631123719789e4c7b0c23c66d534">frame_size</a></td></tr>
<tr class="memdesc:a0ce9631123719789e4c7b0c23c66d534"><td class="mdescLeft"> </td><td class="mdescRight">Audio only. <a href="#a0ce9631123719789e4c7b0c23c66d534">More...</a><br /></td></tr>
<tr class="separator:a0ce9631123719789e4c7b0c23c66d534"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad2363a9a16b5674b5232c288a3e031cf"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#ad2363a9a16b5674b5232c288a3e031cf">initial_padding</a></td></tr>
<tr class="memdesc:ad2363a9a16b5674b5232c288a3e031cf"><td class="mdescLeft"> </td><td class="mdescRight">Audio only. <a href="#ad2363a9a16b5674b5232c288a3e031cf">More...</a><br /></td></tr>
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<tr class="memitem:a68885b36e5b430865da9e591c36ac101"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a68885b36e5b430865da9e591c36ac101">trailing_padding</a></td></tr>
<tr class="memdesc:a68885b36e5b430865da9e591c36ac101"><td class="mdescLeft"> </td><td class="mdescRight">Audio only. <a href="#a68885b36e5b430865da9e591c36ac101">More...</a><br /></td></tr>
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<tr class="memitem:a539f03590bb3e8c69d2111ede5e4ac94"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structAVCodecParameters.html#a539f03590bb3e8c69d2111ede5e4ac94">seek_preroll</a></td></tr>
<tr class="memdesc:a539f03590bb3e8c69d2111ede5e4ac94"><td class="mdescLeft"> </td><td class="mdescRight">Audio only. <a href="#a539f03590bb3e8c69d2111ede5e4ac94">More...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>This struct describes the properties of an encoded stream. </p>
<p>sizeof(AVCodecParameters) is not a part of the public ABI, this struct must be allocated with <a class="el" href="group__lavc__core.html#ga647755ab2252e93221bb345f3d5e414f" title="Allocate a new AVCodecParameters and set its fields to default values (unknown/invalid/0). ">avcodec_parameters_alloc()</a> and freed with <a class="el" href="group__lavc__core.html#ga950c8da55b8112077e640b6a0cb8cf36" title="Free an AVCodecParameters instance and everything associated with it and write NULL to the supplied p...">avcodec_parameters_free()</a>. </p>
<dl><dt><b>Examples: </b></dt><dd><a class="el" href="remuxing_8c-example.html#_a28">remuxing.c</a>.</dd>
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<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04144">4144</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
</div><h2 class="groupheader">Field Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a58369c3a8a986935b572df5aa6361ce2">◆ </a></span>codec_type</h2>
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<td class="memname">enum <a class="el" href="group__lavu__misc.html#ga9a84bba4713dfced21a1a56163be1f48">AVMediaType</a> AVCodecParameters::codec_type</td>
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<p>General type of the encoded data. </p>
<dl><dt><b>Examples: </b></dt><dd><a class="el" href="remuxing_8c-example.html#a30">remuxing.c</a>, and <a class="el" href="transcoding_8c-example.html#a99">transcoding.c</a>.</dd>
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<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04148">4148</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="transcoding_8c_source.html#l00405">encode_write_frame()</a>, <a class="el" href="transcoding_8c_source.html#l00375">init_filters()</a>, and <a class="el" href="remuxing_8c_source.html#l00046">main()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9f76f2475ef24ff4c9771dd53072d040">◆ </a></span>codec_id</h2>
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<td class="memname">enum <a class="el" href="group__lavc__core.html#gaadca229ad2c20e060a14fec08a5cc7ce">AVCodecID</a> AVCodecParameters::codec_id</td>
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<p>Specific type of the encoded data (the codec used). </p>
<dl><dt><b>Examples: </b></dt><dd><a class="el" href="demuxing_decoding_8c-example.html#a58">demuxing_decoding.c</a>, and <a class="el" href="transcoding_8c-example.html#a27">transcoding.c</a>.</dd>
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<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04152">4152</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="demuxing__decoding_8c_source.html#l00149">open_codec_context()</a>, and <a class="el" href="transcoding_8c_source.html#l00054">open_input_file()</a>.</p>
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<p>Additional information about the codec (corresponds to the AVI FOURCC). </p>
<dl><dt><b>Examples: </b></dt><dd><a class="el" href="remuxing_8c-example.html#a36">remuxing.c</a>.</dd>
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<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04156">4156</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="remuxing_8c_source.html#l00046">main()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9befe0b86412646017afb0051d144d13">◆ </a></span>extradata</h2>
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<p>Extra binary data needed for initializing the decoder, codec-dependent. </p>
<p>Must be allocated with <a class="el" href="group__lavu__mem__funcs.html#ga7c4f0fe9fe716121ce05f7170810ce8e" title="Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...">av_malloc()</a> and will be freed by <a class="el" href="group__lavc__core.html#ga950c8da55b8112077e640b6a0cb8cf36" title="Free an AVCodecParameters instance and everything associated with it and write NULL to the supplied p...">avcodec_parameters_free()</a>. The allocated size of extradata must be at least extradata_size + AV_INPUT_BUFFER_PADDING_SIZE, with the padding bytes zeroed. </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04166">4166</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<p>Size of the extradata content in bytes. </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04170">4170</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<td class="memname">int AVCodecParameters::format</td>
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<li>video: the pixel format, the value corresponds to enum AVPixelFormat.</li>
<li>audio: the sample format, the value corresponds to enum AVSampleFormat. </li>
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<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04176">4176</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<p>The average bitrate of the encoded data (in bits per second). </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04181">4181</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<p>The number of bits per sample in the codedwords. </p>
<p>This is basically the bitrate per sample. It is mandatory for a bunch of formats to actually decode them. It's the number of bits for one sample in the actual coded bitstream.</p>
<p>This could be for example 4 for ADPCM For PCM formats this matches bits_per_raw_sample Can be 0 </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04194">4194</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<p>This is the number of valid bits in each output sample. </p>
<p>If the sample format has more bits, the least significant bits are additional padding bits, which are always 0. Use right shifts to reduce the sample to its actual size. For example, audio formats with 24 bit samples will have bits_per_raw_sample set to 24, and format set to AV_SAMPLE_FMT_S32. To get the original sample use "(int32_t)sample >> 8"."</p>
<p>For ADPCM this might be 12 or 16 or similar Can be 0 </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04207">4207</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<p>Codec-specific bitstream restrictions that the stream conforms to. </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04212">4212</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<td class="memname">int AVCodecParameters::level</td>
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<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04213">4213</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<p>Video only. </p>
<p>The dimensions of the video frame in pixels. </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04218">4218</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04219">4219</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<td class="memname"><a class="el" href="structAVRational.html">AVRational</a> AVCodecParameters::sample_aspect_ratio</td>
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<p>Video only. </p>
<p>The aspect ratio (width / height) which a single pixel should have when displayed.</p>
<p>When the aspect ratio is unknown / undefined, the numerator should be set to 0 (the denominator may have any value). </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04228">4228</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<td class="memname">enum <a class="el" href="group__lavc__core.html#ga957ef25581a6b3c98589817b1cbed02c">AVFieldOrder</a> AVCodecParameters::field_order</td>
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<p>Video only. </p>
<p>The order of the fields in interlaced video. </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04233">4233</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<td class="memname">enum <a class="el" href="pixfmt_8h.html#a3da0bf691418bc22c4bcbe6583ad589a">AVColorRange</a> AVCodecParameters::color_range</td>
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<p>Video only. </p>
<p>Additional colorspace characteristics. </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04238">4238</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04239">4239</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<td class="memname">enum <a class="el" href="pixfmt_8h.html#ad4791ea14975f098b649db7fcd731ce6">AVColorTransferCharacteristic</a> AVCodecParameters::color_trc</td>
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<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04240">4240</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04241">4241</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04242">4242</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<p>Video only. </p>
<p>Number of delayed frames. </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04247">4247</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<p>Audio only. </p>
<p>The channel layout bitmask. May be 0 if the channel layout is unknown or unspecified, otherwise the number of bits set must be equal to the channels field. </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04254">4254</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<p>Audio only. </p>
<p>The number of audio channels. </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04258">4258</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#abfc9b0aa975206f7e77a125e6b78536e">◆ </a></span>sample_rate</h2>
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<td class="memname">int AVCodecParameters::sample_rate</td>
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<p>Audio only. </p>
<p>The number of audio samples per second. </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04262">4262</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a786f81429bb25853af449fe5737bf2c7">◆ </a></span>block_align</h2>
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<p>Audio only. </p>
<p>The number of bytes per coded audio frame, required by some formats.</p>
<p>Corresponds to nBlockAlign in WAVEFORMATEX. </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04269">4269</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a0ce9631123719789e4c7b0c23c66d534">◆ </a></span>frame_size</h2>
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<p>Audio only. </p>
<p>Audio frame size, if known. Required by some formats to be static. </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04273">4273</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ad2363a9a16b5674b5232c288a3e031cf">◆ </a></span>initial_padding</h2>
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<p>Audio only. </p>
<p>The amount of padding (in samples) inserted by the encoder at the beginning of the audio. I.e. this number of leading decoded samples must be discarded by the caller to get the original audio without leading padding. </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04281">4281</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a68885b36e5b430865da9e591c36ac101">◆ </a></span>trailing_padding</h2>
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<td class="memname">int AVCodecParameters::trailing_padding</td>
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<p>Audio only. </p>
<p>The amount of padding (in samples) appended by the encoder to the end of the audio. I.e. this number of decoded samples must be discarded by the caller from the end of the stream to get the original audio without any trailing padding. </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04288">4288</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a539f03590bb3e8c69d2111ede5e4ac94">◆ </a></span>seek_preroll</h2>
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<p>Audio only. </p>
<p>Number of samples to skip after a discontinuity. </p>
<p class="definition">Definition at line <a class="el" href="avcodec_8h_source.html#l04292">4292</a> of file <a class="el" href="avcodec_8h_source.html">avcodec.h</a>.</p>
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<hr/>The documentation for this struct was generated from the following file:<ul>
<li>libavcodec/<a class="el" href="avcodec_8h_source.html">avcodec.h</a></li>
</ul>
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