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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white">PS:
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:24.0pt"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white">I have invoke before avcodec_open2:<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:24.0pt"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-indent:24.0pt"><b><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white">av_register_all();<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-indent:24.0pt"><b><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white">avcodec_register_all();<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-indent:24.0pt"><b><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="text-indent:24.0pt"><b><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="text-indent:24.0pt"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white">xukaijun<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
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<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" align="left" style="text-align:left"><b><span style="font-size:10.0pt;font-family:宋体">发件人<span lang="EN-US">:</span></span></b><span lang="EN-US" style="font-size:10.0pt;font-family:宋体"> libav-user-bounces@ffmpeg.org [mailto:libav-user-bounces@ffmpeg.org]
</span><b><span style="font-size:10.0pt;font-family:宋体">代表 </span></b><span style="font-size:10.0pt;font-family:宋体">许凯军<span lang="EN-US"><br>
</span><b>发送时间<span lang="EN-US">:</span></b><span lang="EN-US"> 2013</span>年<span lang="EN-US">7</span>月<span lang="EN-US">20</span>日<span lang="EN-US"> 18:04<br>
</span><b>收件人<span lang="EN-US">:</span></b><span lang="EN-US"> libav-user@ffmpeg.org<br>
</span><b>主题<span lang="EN-US">:</span></b><span lang="EN-US"> [Libav-user] PCMU - avcodec_open2 return -22 Unknow Error<o:p></o:p></span></span></p>
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<p class="MsoNormal" align="left" style="text-align:left"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white">Hi!<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white">When I try to open
<b>AV_CODEC_ID_PCM_MULAW </b>by the code below:<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white">Open_satus = -22.<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> AVCodec* codec = avcodec_find_decoder(codec_id);<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> if (!codec)<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> {<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> return -1;<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> }<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> m_ffmpeg_codec_context = avcodec_alloc_context3(codec);<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> if (!m_ffmpeg_codec_context)<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> {<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> return -1;<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> }<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> int open_status = avcodec_open2(m_ffmpeg_codec_context, codec, NULL);<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> if (open_status < 0)<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> {<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> CString formater;<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> formater.Format("avcodec_open2 failed :%d\r\n", open_status);<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"> OutputDebugString(formater);<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white">}<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white">Did I make any mistakes?<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;text-autospace:none"><span lang="EN-US" style="font-family:"Lucida Console";color:black;background:white;mso-highlight:white">xukaijun<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:21.0pt"><span lang="EN-US"><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"><o:p> </o:p></span></p>
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