[FFmpeg-user] .m4a metadata

[Lou]

On Thu, 11 Oct 2012 05:23:28 -0700 (PDT)
Joao Bonina <bonina_2001 at yahoo.com> wrote:

> Hi,
> 
> I'm using ffmpeg on Linux as a decoder for .m4a files. They 
> play fine, but metadata doesn't seem to be read. It only reads the 
> creation_time data.
> 
> Can anyone help, please?
> 
> ffprobe version 0.11.2 Copyright (c) 2007-2012 the FFmpeg developers
>   built on Oct 10 2012 18:26:07 with gcc 4.7.1
>  
>  configuration: --enable-libmp3lame --enable-libtheora --enable-libx264 
> --disable-libgsm --enable-postproc --disable-libxvid --enable-libfaac 
> --enable-pthreads --enable-libvorbis --enable-gpl --disable-x11grab 
> --enable-nonfree
>   libavutil      51. 54.100 / 51. 54.100
>   libavcodec     54. 23.100 / 54. 23.100
>   libavformat    54.  6.100 / 54.  6.100
>   libavdevice    54.  0.100 / 54.  0.100
>   libavfilter     2. 77.100 /  2. 77.100
>   libswscale      2.  1.100 /  2.  1.100
>   libswresample   0. 15.100 /  0. 15.100
>   libpostproc    52.  0.100 / 52.  0.100
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Portugal.m4a':
>   Metadata:
>     major_brand     : M4A
>     minor_version   : 0
>     compatible_brands: mp42isomM4A
>     creation_time   : 2012-09-29 15:28:41
>   Duration: 00:01:28.80, start: 0.000000, bitrate: 608 kb/s
>     Stream #0:0(und): Audio: alac (alac / 0x63616C61), 44100 Hz, 2 channels, s16, 608 kb/s
>     Metadata:
>       creation_time   : 2012-09-29 15:28:41
> [FORMAT]
> filename=Portugal.m4a
> nb_streams=1
> format_name=mov,mp4,m4a,3gp,3g2,mj2
> format_long_name=QuickTime/MPEG-4/Motion JPEG 2000 format
> start_time=0.000000
> duration=88.800000
> size=6756165
> bit_rate=608663
> TAG:major_brand=M4A
> TAG:minor_version=0
> TAG:compatible_brands=mp42isomM4A
> TAG:creation_time=2012-09-29 15:28:41
> [/FORMAT]

What metadata are you expecting? Did you use ffmpeg to add the
metadata? If yes, also include the actual command(s).

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