Andrew Heard <[email protected]> added the comment:
Thanks for looking into this. I have submitted a zip file containing the
original Apple Lossless file created using afconvert as Sample
CoreAudio.m4a (this is the one that works with iTunes sharing) and the
file Sample FFmpeg.m4a created with FFmpeg.
The command I used to do the conversion and its output was:
ffmpeg -i /Users/andrew/Desktop/Sample\ CoreAudio.m4a -acodec copy
/Users/andrew/Desktop/Sample\ ffmpeg.m4a
FFmpeg version 0.5.3, Copyright (c) 2000-2009 Fabrice Bellard, et al.
configuration: --arch=x86_64 --enable-static --disable-shared
libavutil 49.15. 0 / 49.15. 0
libavcodec 52.20. 1 / 52.20. 1
libavformat 52.31. 0 / 52.31. 0
libavdevice 52. 1. 0 / 52. 1. 0
built on Feb 17 2011 08:12:38, gcc: 4.2.1 (Apple Inc. build 5666) (dot
3)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/andrew/Desktop/Sample
CoreAudio.m4a':
Duration: 00:00:11.12, start: 0.000000, bitrate: 729 kb/s
Stream #0.0(eng): Audio: alac, 44100 Hz, stereo, s16
Output #0, ipod, to '/Users/andrew/Desktop/Sample ffmpeg.m4a':
Stream #0.0(eng): Audio: alac, 44100 Hz, stereo, s16
Stream mapping:
Stream #0.0 -> #0.0
Press [q] to stop encoding
size= 988kB time=11.15 bitrate= 726.3kbits/s
video:0kB audio:987kB global headers:0kB muxing overhead 0.163319%
File 'Sample alac files.zip' not attached - you can download it from
https://roundup.ffmpeg.org/file1365.
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FFmpeg issue tracker <[email protected]>
<https://roundup.ffmpeg.org/issue2618>
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