<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-8859-1">
<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;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
@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="FR" link="blue" vlink="purple">
<div class="WordSection1">
<table class="MsoNormalTable" border="0" cellpadding="0">
<tbody>
<tr>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal">Hello, <o:p></o:p></p>
<p class="MsoNormal">I recently want to use the last FFMPEG release version to decode video packets. avcodec_decode_video2 is deprecated so I want to use
<span style="mso-fareast-language:FR">avcodec_send_packet and avcodec_receive_frame<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:FR"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:FR">I’m just not sure waht about doing when receiving eror like AVERROR(EAGAIN),
</span>AVERROR_EOF… my code is below.<o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:FR"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New";color:blue">int</span><span style="font-size:10.0pt;font-family:"Courier New""> FFMpegImgDecode( AVCodecContext* lpCodecCtx, AVPacket* lpAVPacket, AVFrame*
lpAVFrame)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">{
<span style="color:blue">int</span> iResult = 1;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:blue">int</span> iDecodeResult = 1;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New";color:blue"> if</span><span style="font-size:10.0pt;font-family:"Courier New""> ((lpCodecCtx!=NULL) && (lpAVFrame!=NULL) && (lpAVPacket!=NULL))<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> {
<span style="color:blue">if</span> (m_lpCodecCtx->codec_type == AVMEDIA_TYPE_VIDEO)
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> { iResult = lpfnavcodec_send_packet( m_lpCodecCtx, &m_lpPacket);
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New";color:blue"> if</span><span style="font-size:10.0pt;font-family:"Courier New""> (iResult == AVERROR_EOF)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> { iResult = 0;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> }<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> <span style="color:blue">if</span> (iResult == 0)
<span style="color:green">// success<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> { iDecodeResult = lpfnavcodec_receive_frame(m_lpCodecCtx, m_lpFrame);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:green">// iDecodeResult == 0 => Success<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> <span style="color:green">// iDecodeResult == AVERROR(EAGAIN)) => Need to feed the next input frame<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> <span style="color:green">// else => Error<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:blue">if</span> (iDecodeResult==AVERROR(EAGAIN))<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> { printf(<span style="color:red">"avcodec_receive_frame ERROR [AVERROR(EAGAIN)]\r\n"</span>);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> }<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:blue">if</span> ((iDecodeResult!=0) && (iDecodeResult!=AVERROR(EAGAIN)))<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> { char szErrorText[255];<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> av_strerror( iResult, szErrorText,
<span style="color:blue">sizeof</span>(szErrorText));<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> printf(<span style="color:red">"avcodec_receive_frame ERROR [%i][%s]\r\n"</span>, iResult, szErrorText);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> }<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> }<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> <span style="color:blue">else<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> { char szErrorText[255];<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> av_strerror( iResult, szErrorText,
<span style="color:blue">sizeof</span>(szErrorText));<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> printf(<span style="color:red">"avcodec_send_packet ERROR [%i][%s]\r\n"</span>, iResult, szErrorText);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> iDecodeResult = iResult;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> }<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> }<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""> }<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New";color:blue"> return</span><span style="font-size:10.0pt;font-family:"Courier New""> iDecodeResult;
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:FR"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:FR">Also sometimes I receive error :
</span><span lang="EN-US">avcodec_send_packet ERROR [-1094995529][Invalid data found when processing input].<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">It is when I decompress a h264 video stream from a camera. Do you think it is possible that this error can arrive if I have some network trouble with the camera.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Regards,<o:p></o:p></span></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:FR"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:FR"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:FR"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>