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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link="#0563C1" vlink="#954F72" style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hi, all!<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> I’m trying to extract motion vector in the H.264 video using Zeranoe's FFmpeg Builds.<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> FFmpeg version: 2013-06-23 git-c329713<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> libavutil 52. 37.101 / 52. 37.101<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> libavcodec 55. 16.100 / 55. 16.100<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> libavformat 55. 9.100 / 55. 9.100<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> libavdevice 55. 2.100 / 55. 2.100<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> libavfilter 3. 77.101 / 3. 77.101<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> libswscale 2. 3.100 / 2. 3.100<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> libswresample 0. 17.102 / 0. 17.102<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> libpostproc 52. 3.100 / 52. 3.100<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>This FFmpeg build was configured with:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> --disable-static --enable-shared --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib<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> I </span><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;background:white'>refered to the method in this blog </span><span lang=EN-US><a href="http://jiasi.blogspot.com/2011/05/motion-vector-extraction.html">http://jiasi.blogspot.com/2011/05/motion-vector-extraction.html</a> and compiled the code in VS 2012 under windows 7.<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> I’ve set the </span><span lang=EN-US style='font-size:9.5pt;font-family:NSimSun;color:red;background:white;mso-highlight:white'>debug_mv</span><span lang=EN-US style='font-size:9.5pt;font-family:NSimSun;color:red'> </span><span lang=EN-US style='font-size:9.5pt;font-family:NSimSun'>of <span style='color:#2B91AF;background:white;mso-highlight:white'>AVCodecContext</span><span style='color:#2B91AF'> </span>as <span style='color:black;background:white;mso-highlight:white'>FF_DEBUG_VIS_MV_P_FOR | FF_DEBUG_VIS_MV_B_FOR</span><span style='color:black'>, </span></span><span lang=EN-US>and get the result as followed. But the </span><span lang=EN-US style='font-size:9.5pt;font-family:NSimSun;color:red;background:white;mso-highlight:white'>motion_val</span><span lang=EN-US style='font-size:9.5pt;font-family:NSimSun;color:red'> </span><span lang=EN-US style='font-size:9.5pt;font-family:NSimSun'>in <span style='color:#2E75B6;mso-style-textfill-fill-color:#2E75B6;mso-style-textfill-fill-alpha:100.0%'>AVFrame </span></span><span lang=EN-US>did’t have the corresponding value. Have you guys meet with this problem?<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><img border=0 width=568 height=240 id="_x56fe__x7247__x0020_1" src="cid:image001.jpg@01CE9C05.2A791170"></span><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>Thanks<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Gao Yuan </span><span lang=EN-US style='font-family:Wingdings'>J</span><span lang=EN-US><o:p></o:p></span></p></div></body></html>