<div dir="ltr"><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">YIRAN LI <mrfun.china@...> writes:<br>
<br>
> $ ffmpeg.exe -i big_buck_bunny.mp4 a.amv<br>
<br>
</span>$ ffmpeg -i input -vcodec amv -acodec adpcm_ima_amv -f avi out.amv<br>
<br>
I suspect the file format may be different from avi<br>
but doesn't have to. Please test and report back.<br>
<br>
Carl Eugen<br></blockquote><div><br></div><div><br></div><div><div class="gmail_default" style="font-family:georgia,serif;display:inline">Hi Carl,</div></div><div><div class="gmail_default" style="font-family:georgia,serif;display:inline"><br></div></div><div><div class="gmail_default" style="font-family:georgia,serif;display:inline">I tried your command to do a conversion. Here's the output:</div></div><div><div class="gmail_default" style="font-family:georgia,serif;display:inline"><br></div></div><div><font face="georgia, serif">$ ffmpeg.exe -i big_buck_bunny.mp4 -vcodec amv -acodec adpcm_ima_amv -f avi out.amv</font></div><div><font face="georgia, serif">ffmpeg version N-74386-g542562e Copyright (c) 2000-2015 the FFmpeg developers</font></div><div><font face="georgia, serif"> built with gcc 4.9.3 (GCC)</font></div><div><font face="georgia, serif"> configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --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-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib</font></div><div><font face="georgia, serif"> libavutil 54. 30.100 / 54. 30.100</font></div><div><font face="georgia, serif"> libavcodec 56. 57.100 / 56. 57.100</font></div><div><font face="georgia, serif"> libavformat 56. 40.101 / 56. 40.101</font></div><div><font face="georgia, serif"> libavdevice 56. 4.100 / 56. 4.100</font></div><div><font face="georgia, serif"> libavfilter 5. 32.100 / 5. 32.100</font></div><div><font face="georgia, serif"> libswscale 3. 1.101 / 3. 1.101</font></div><div><font face="georgia, serif"> libswresample 1. 2.101 / 1. 2.101</font></div><div><font face="georgia, serif"> libpostproc 53. 3.100 / 53. 3.100</font></div><div><font face="georgia, serif">Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'big_buck_bunny.mp4':</font></div><div><font face="georgia, serif"> Metadata:</font></div><div><font face="georgia, serif"> major_brand : isom</font></div><div><font face="georgia, serif"> minor_version : 512</font></div><div><font face="georgia, serif"> compatible_brands: isomiso2avc1mp41</font></div><div><font face="georgia, serif"> Duration: 00:01:00.19, start: 0.000000, bitrate: 129 kb/s</font></div><div><font face="georgia, serif"> Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 96x96 [SAR 1:1 DAR 1:1], 51 kb/s, 23.81 fps, 23.92 tbr, 19128 tbn, 38256 tbc (default)</font></div><div><font face="georgia, serif"> Metadata:</font></div><div><font face="georgia, serif"> handler_name : VideoHandler</font></div><div><font face="georgia, serif"> Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, stereo, fltp, 75 kb/s (default)</font></div><div><font face="georgia, serif"> Metadata:</font></div><div><font face="georgia, serif"> handler_name : SoundHandler</font></div><div><font face="georgia, serif" color="#ff0000">Unknown encoder '<div class="gmail_default" style="font-family:georgia,serif;display:inline"></div>adpcm_ima_amv'</font></div><div><font face="georgia, serif" color="#ff0000"><br></font></div><div><div class="gmail_default" style="font-family:georgia,serif;display:inline">And I also found this open ticket <a href="https://trac.ffmpeg.org/ticket/747">https://trac.ffmpeg.org/ticket/747</a> so I guess </div><div class="gmail_default" style="color:rgb(255,0,0);font-family:georgia,serif;display:inline"></div><span style="font-family:georgia,serif"><font color="#ff0000">adpcm_ima_amv</font><div class="gmail_default" style="font-family:georgia,serif;display:inline"><font color="#ff0000"> </font><font color="#000000">is not supported yet.</font></div></span></div><div><span style="font-family:georgia,serif"><div class="gmail_default" style="font-family:georgia,serif;display:inline"><font color="#ff0000"><br></font></div></span></div><div><span style="font-family:georgia,serif"><div class="gmail_default" style="font-family:georgia,serif;display:inline"><font color="#000000">If I use -an then I can correctly generate a video only amv file. </font></div></span></div><div><span style="font-family:georgia,serif"><div class="gmail_default" style="font-family:georgia,serif;display:inline"><font color="#000000"><br></font></div></span></div><div><span style="font-family:georgia,serif"><div class="gmail_default" style="font-family:georgia,serif;display:inline"><font color="#000000"><br></font></div></span></div><div><span style="font-family:georgia,serif"><div class="gmail_default" style="font-family:georgia,serif;display:inline"><font color="#000000">Thanks</font></div></span></div><div><span style="font-family:georgia,serif"><div class="gmail_default" style="font-family:georgia,serif;display:inline"><font color="#ff0000"><br></font></div></span></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
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</blockquote></div><br></div></div>