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C:\>ffmpeg -i vid1.mkv -f avi -vcodec mpeg4 -b 1500k -acodec libmp3lame -ab 128k -ac 2 vid1.avi
FFmpeg version SVN-r19159-Sherpya, Copyright (c) 2000-2009 Fabrice Bellard, et a
l.
libavutil 50. 3. 0 / 50. 3. 0
libavcodec 52.30. 2 / 52.30. 2
libavformat 52.34. 0 / 52.34. 0
libavdevice 52. 2. 0 / 52. 2. 0
libavfilter 0. 5. 0 / 0. 5. 0
libswscale 0. 7. 1 / 0. 7. 1
libpostproc 51. 2. 0 / 51. 2. 0
built on Jun 12 2009 04:25:02, gcc: 4.5.0 20090517 (experimental)
Seems stream 0 codec frame rate differs from container frame rate: 47.95 (27956/
583) -> 23.98 (24000/1001)
Input #0, matroska, from 'vid1.mkv':
Duration: 02:23:46.17, start: 0.000000, bitrate: N/A
Stream #0.0(eng): Video: h264, yuv420p, 720x480, PAR 175:144 DAR 175:96, 23.98 tbr, 1k tbn, 47.95 tbc
Stream #0.1(eng): Audio: aac, 24000 Hz, 5.1, s16
Stream #0.2(eng): Subtitle: 0x0000
Output #0, avi, to 'vid1.avi':
Stream #0.0(eng): Video: mpeg4, yuv420p, 720x480 [PAR 175:144 DAR 175:96], q=2-31, 1500 kb/s, 23.98 tbn, 23.98 tbc
Stream #0.1(eng): Audio: libmp3lame, 24000 Hz, stereo, s16, 128 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
Press [q] to stop encoding
[aac @ 0x1779410]SBR not implemented. Update your FFmpeg version to the newest one from SVN. If the problem still occurs, it means that your file has a feature which has not been implemented.
[aac @ 0x1779410]SBR not implemented. Update your FFmpeg version to the newest one from SVN. If the problem still occurs, it means that your file has a feature which has not been implemented.
[aac @ 0x1779410]SBR not implemented. Update your FFmpeg version to the newest one from SVN. If the problem still occurs, it means that your file has a feature which has not been implemented.
[aac @ 0x1779410]SBR not implemented. Update your FFmpeg version to the newest one from SVN. If the problem still occurs, it means that your file has a feature which has not been implemented.
[aac @ 0x1779410]SBR not implemented. Update your FFmpeg version to the newest one from SVN. If the problem still occurs, it means that your file has a feature which has not been implemented.
[aac @ 0x1779410]SBR not implemented. Update your FFmpeg version to the newest one from SVN. If the problem still occurs, it means that your file has a feature which has not been implemented.
Resampling with input channels greater than 2 unsupported.
Can not resample 6 channels @ 24000 Hz to 2 channels @ 24000 Hz
I have found a binary of ffmpeg which starts the conversion process. It inludes the faac and faad libraries but fails with the following error:
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[matroska @ 0x3fd4e0]Read errortrate= 128.0kbits/s
[libmp3lame @ 0xbb8130]lame: output buffer too small (buffer index: 9216, free bytes: 576)
Audio encoding failed
I have tried to fix the problem by building ffmpeg with an older version of lame as suggested.
Therefore I installed the MinGW + MSys environment to build ffmpeg with the parameters "--disable-encoder=aac --disable-decoder=aac --enable-libfaac --enable-libfaad".
I followed the instructions in the wiki step by step:
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tar zxfv faad2-2.6.1.tar.gz
patch -p0 < faad2-2.6.1.patch
cd faad2
sh bootstrap
./configure --prefix=/static --enable-static --disable-shared
make LDFLAGS="-no-undefined"
make install
But the command "sh bootstrap" fails and reports:
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$ sh bootstrap
bootstrap: line 12: aclocal: command not found
Do you know a solution for this problem?