[MPlayer-users] m4a meta data

[Reimar Döffinger]

Hello,
On Wed, Jun 11, 2008 at 06:49:41PM +0200, Reimar Döffinger wrote:
> On Tue, Jun 10, 2008 at 04:30:47PM -0500, Christopher Reder wrote:
> > > root at dci:/media/sda1/Norah Jones/Come Away with Me$ mplayer -demuxer lavf > -slave
> > >  -quiet -ao alsa:device=hw=0.1 01\ Don\'t\ Know\ Why.m4a
> > > MPlayer 1.0rc2-4.1.2 (C) 2000-2007 MPlayer Team
> > > CPU: ARM
> > 
> > > Playing 01 Don't Know Why.m4a.
> > > libavformat file format detected.
> > > [lavf] Audio stream found, -aid 0
> > > ==========================================================================
> > > Forced audio codec: mad
> > > 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)
> > > Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio)
> > > decoder)
> > > ==========================================================================
> > > AO: [alsa] 44100Hz 2ch s16le (2 bytes per sample)
> > > Video: no video
> > > Starting playback...
> > > get_meta_artist
> > > ANS_META_ARTIST=''
> > 
> > Has anyone been able to retrieve M4a/mp4 data from mplayer?
> 
> Well, my guess is that the problem is exactly there: The file probably
> contains only iPod metadata, no mov and not mp4 metadata (yes, it seems
> they managed to make three formats that are almost the same except a few
> details, guaranteeing a usability nightmare...).

And I also forgot: have you tried
mplayer -identify file | grep ID_CLIP_INFO
For me at least with the nasa_shuttle_m720p.mov that should be somewhere
on Apple's pages I get this:
> ID_CLIP_INFO_NAME0=name
> ID_CLIP_INFO_VALUE0=NASA Shuttle
> ID_CLIP_INFO_NAME1=copyright
> ID_CLIP_INFO_VALUE1=�2005 NASA
> ID_CLIP_INFO_NAME2=comments
> ID_CLIP_INFO_VALUE2=http://spaceflight.nasa.gov/
> ID_CLIP_INFO_N=3

So at least it can work with some files...

Greetings,
Reimar Döffinger