[MPlayer-users] H263+ encoding with mencoder

zimon@iki.fi zimon at niksula.hut.fi
Thu Sep 11 10:26:15 CEST 2003

On Wed, Sep 10, 2003 at 11:57:44AM +0200, stephane martin wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> I have encoded a video (3gpp format ) with H263+ codec
> mencoder \*.jpg -mf on:fps=25 -ovc lavc -lavcopts
> vcodec=h263p -o test.3gp
> Unfortunately, 3GP player(QuickTime, RealOne) can't
> play my video.
> (mplayer reads it)
> Any idea would be appreciated ?

Maybe only thing what is wrong in it, is the format number.
H263p codec will give it fourcc 0x33363268, when 3GP player may expect

And btw, codecs.conf should have "fourcc s263" or "format 0x33363273" in
the section of "videocodec ffh263". It works on *.3gp files. 

Also I got samr (format 0x726D6173) audio-stream working in ffplay, but not yet 
in mplayer. It somehow does not recognize correct parameters for audio
(samplerate, channels, audio bits) although ffplay/ffmpeg with same code does.
I did manage to force correct parameters with -rawaudio, when there was
just only one audio-trace in sample.amr file, but not when audio track
was inside .3gp video file.

There is a patch and RPM spec file for ffmpeg in 
<http://www.iki.fi/zimon/public/rpm_specs/ >
The spec file has URL where to get the missing code. (*.zip files)

I also have the patch for mplayer, but as it does not work, no point
releasing it.

Those who do not know, 3GPP video files are used in 2.5G and 3G phones.

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