I tested this with a current SVN copy of mplayer (r28108). It detects
the tags, but I don't know if the problem is with the standard
configuration of the distribution's version of mplayer, or that the fix
hasn't simply been imported into our version yet.
Here's the output from the SVN version of mplayer; please ignore the
audio-output messages, since I didn't bother compiling it with
pulseaudio support:
$ ./mplayer -identify 255025-tagged-aac.m4a
MPlayer dev-SVN-r28108-4.3.2 (C) 2000-2008 MPlayer Team
CPU: Intel(R) Pentium(R) 4 CPU 2.60GHz (Family: 15, Model: 2, Stepping: 9)
CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2
Playing 255025-tagged-aac.m4a.
Cache fill: 0.75% (15648 bytes)
libavformat file format detected.
ID_AUDIO_ID=0
[lavf] Audio stream found, -aid 0
Clip info:
name: Test Title
ID_CLIP_INFO_NAME0=name
ID_CLIP_INFO_VALUE0=Test Title
author: Test Composer
ID_CLIP_INFO_NAME1=author
ID_CLIP_INFO_VALUE1=Test Composer
comments: Test Comment
ID_CLIP_INFO_NAME2=comments
ID_CLIP_INFO_VALUE2=Test Comment
album: Test Album
ID_CLIP_INFO_NAME3=album
ID_CLIP_INFO_VALUE3=Test Album
ID_CLIP_INFO_N=4
ID_FILENAME=255025-tagged-aac.m4a
ID_DEMUXER=lavfpref
ID_AUDIO_FORMAT=255
ID_AUDIO_BITRATE=0
ID_AUDIO_RATE=44100
ID_AUDIO_NCH=2
ID_LENGTH=19.92
ID_SEEKABLE=1
ID_CHAPTERS=0
==
Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
FAAD: compressed input bitrate missing, assuming 128kbit/s!
AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 16000-176400)
ID_AUDIO_BITRATE=128000
ID_AUDIO_RATE=44100
ID_AUDIO_NCH=2
Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio) decoder)
==
[AO OSS] audio_setup: Can't open audio device /dev/dsp: Device or resource busy
[AO ESD] latency: [server: 0.26s, net: 0.00s] (adjust 0.26s)
AO: [esd] 44100Hz 2ch s16le (2 bytes per sample)
ID_AUDIO_CODEC=faad
Video: no video
Starting playback...
And here's the output from the current version; note that there's much
less information provided.
$ mplayer -identify 255025-tagged-aac.m4a
MPlayer 1.0rc2-4.3.2 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Pentium(R) 4 CPU 2.60GHz (Family: 15, Model: 2, Stepping: 9)
CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
Playing 255025-tagged-aac.m4a.
Cache fill: 0.00% (0 bytes)
Quicktime/MOV file format detected.
ID_AUDIO_ID=0
[mov] Audio stream found, -aid 0
ID_FILENAME=255025-tagged-aac.m4a
ID_DEMUXER=mov
ID_AUDIO_FORMAT=mp4a
ID_AUDIO_BITRATE=3112
ID_AUDIO_RATE=44100
ID_AUDIO_NCH=2
ID_LENGTH=19.92
==
Forced audio codec: mad
Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
AUDIO: 44100 Hz, 2 ch, s16le, 3.1 kbit/0.22% (ratio: 389-176400)
ID_AUDIO_BITRATE=3112
ID_AUDIO_RATE=44100
ID_AUDIO_NCH=2
Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio) decoder)
==
AO: [pulse] 44100Hz 2ch s16le (2 bytes per sample)
ID_AUDIO_CODEC=faad
Video: no video
Starting playback...
The difference seems to be that the SVN version uses the lavpref
demuxer, while the Ubuntu version uses mov. Attempting to force the
lavpref demuxer fails to play anything on my version:
$ mplayer -demuxer lavfpref 255025-tagged-aac.m4a
MPlayer 1.0rc2-4.3.2 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Pentium(R) 4 CPU 2.60GHz (Family: 15, Model: 2, Stepping: 9)
CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
Playing 255025-tagged-aac.m4a.
Cache fill: 0.75% (15648 bytes)
Exiting... (End of file)
I am now running mplayer 2:1.0~rc2-0ubuntu17 on Intrepid.
--
AAC tags not shown
https://bugs.launchpad.net/bugs/255025
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