<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-2">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.StylE-mailovZprvy17
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:windowtext;}
span.StylE-mailovZprvy18
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:#1F497D;}
span.StylE-mailovZprvy19
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 70.85pt 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="CS" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<p class="MsoNormal">Hello guys,<o:p></o:p></p>
<p class="MsoNormal">what would be the correct way to parse H264 SPS nad PPS so I can get width, height, etc.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m trying something like this but it does nothing<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:#4EC9B0;background:black;mso-highlight:black">AVCodecParserContext</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">*</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">parser</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">=</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">av_parser_init</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">(</span><span style="font-size:9.5pt;font-family:Consolas;color:#B8D7A3;background:black;mso-highlight:black">AV_CODEC_ID_H264</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">);</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:#4EC9B0;background:black;mso-highlight:black">AVCodec</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">*</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">pCodec</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">=</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">avcodec_find_decoder</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">(</span><span style="font-size:9.5pt;font-family:Consolas;color:#B8D7A3;background:black;mso-highlight:black">AV_CODEC_ID_H264</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">);</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:#4EC9B0;background:black;mso-highlight:black">AVCodecContext</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">*</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">pCodecCtx</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">=</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">avcodec_alloc_context3</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">(</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">pCodec</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">);</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">pCodecCtx</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">=</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">avcodec_alloc_context3</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">(</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">pCodec</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">);</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:#4EC9B0;background:black;mso-highlight:black">uint8_t</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">*</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">poutbuf</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">=</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#569CD6;background:black;mso-highlight:black">nullptr</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">;</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:#569CD6;background:black;mso-highlight:black">int</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">poutbuf_size</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">=</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B5CEA8;background:black;mso-highlight:black">0</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">;</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas;color:#569CD6;background:black;mso-highlight:black">int</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">len</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">=</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">av_parser_parse2</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">(</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">parser</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">,</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">pCodecCtx</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">,</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">&</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">poutbuf</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">,</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">&</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">poutbuf_size</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">,</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#C8C8C8;background:black;mso-highlight:black">pSps</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">,</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#7F7F7F;background:black;mso-highlight:black">sps_size</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">,</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B5CEA8;background:black;mso-highlight:black">0</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">,</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B5CEA8;background:black;mso-highlight:black">0</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">,</span><span style="font-size:9.5pt;font-family:Consolas;color:gainsboro;background:black;mso-highlight:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#B5CEA8;background:black;mso-highlight:black">0</span><span style="font-size:9.5pt;font-family:Consolas;color:#B4B4B4;background:black;mso-highlight:black">);</span><span style="font-size:9.5pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal">Best regards Ivan<o:p></o:p></p>
</div>
</body>
</html>