Andrew Heard <and...@wizheard.com> added the comment: Here are the files created with the latest FFmpeg.
ffmpeg -i /Users/andrew/Desktop/Sample\ CoreAudio.m4a -acodec copy /Users/andrew/Desktop/Sample\ FFmpeg2.m4a FFmpeg version git-fb61a7c, Copyright (c) 2000-2011 the FFmpeg developers built on Mar 9 2011 15:41:42 with gcc 4.2.1 (Apple Inc. build 5666) (dot 3) configuration: --arch=x86_64 --enable-static --disable-shared libavutil 50. 39. 0 / 50. 39. 0 libavcodec 52.113. 2 / 52.113. 2 libavformat 52.102. 0 / 52.102. 0 libavdevice 52. 2. 3 / 52. 2. 3 libavfilter 1. 76. 0 / 1. 76. 0 libswscale 0. 12. 0 / 0. 12. 0 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/andrew/Desktop/Sample CoreAudio.m4a': Metadata: major_brand : M4A minor_version : 0 compatible_brands: M4A mp42isom creation_time : 2017-07-16 22:48:41 Duration: 00:00:11.12, start: 0.000000, bitrate: 729 kb/s Stream #0.0(eng): Audio: alac, 44100 Hz, 2 channels, s16, 726 kb/s Metadata: creation_time : 2017-07-16 22:48:41 Output #0, ipod, to '/Users/andrew/Desktop/Sample FFmpeg2.m4a': Metadata: major_brand : M4A minor_version : 0 compatible_brands: M4A mp42isom creation_time : 2017-07-16 22:48:41 encoder : Lavf52.102.0 Stream #0.0(eng): Audio: alac, 44100 Hz, 2 channels, 726 kb/s Metadata: creation_time : 2017-07-16 22:48:41 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 updated.zip' not attached - you can download it from https://roundup.ffmpeg.org/file1366. ________________________________________________ FFmpeg issue tracker <iss...@roundup.ffmpeg.org> <https://roundup.ffmpeg.org/issue2618> ________________________________________________