[MPlayer-users] Some vids not playing

[Steven Feil]

In-Reply-To: <loom.20131214T005733-694 at post.gmane.org>

Thanks Carl, even that helps me restructure my question..


Carl Eugen Hoyos cehoyos at ag.or.at writes:

> There is nothing except a few very outdated Windows drivers for
> ancient codecs that you can optionally install, today all decoders
> are in a library called libavcodec from FFmpeg project

It seams that given this information, I should recompile mplayer and
disable all external decoders (such as mad audio decoder).  As far as
I know I don't have any old files. Also, based on the output of
Knoppix based mplayer, it appears that mplayer plays the file using
only ffmpeg codecs.

Carl writes:

> You could now upload the file in question, we could test it and find
> out that it works fine,

The file plays without error when tested with Knoppix (live CD)
"MPlayer svn r34540 (Debian), built with gcc-4.7"

mplayer ssvn r34540 writes:

> ================================================================
> Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
> libavcodec version 53.35.0 (external)
> Mismatching header version 53.32.2
> Selected video codec: [ffflv] vfm: ffmpeg (FFmpeg Flash video)
> ===============================================================
> ================================================================
> Requested audio codec family [mpg123] (afm=mpg123) not available.
> Enable it at compilation.
> Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
> AUDIO: 22050 Hz, 2 ch, floatle, 65.9 kbit/4.67% (ratio: 8232->176400)
> Selected audio codec: [ffmp3float] afm: ffmpeg (FFmpeg MPEG layer-3 audio)
> ==========================================================================

My next question is, when I issue the command "mplayer -vc help" does
mplayer query the ffmpeg's codec library to generate the list of
available codecs? Is the utility mediainfo from
http://mediaarea.net/en/MediaInfo useful in determining if ffmpeg
supports the required codecs? Mediainfo does return video and audio
codec id numbers. Last question is there on on-line list of which
codecs are supported by each version of ffmpeg?

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