[MPlayer-users] MEncode fails to find codecs

[Ulf Magnusson]

On Dec 26, 2007 10:23 AM, Krzysztof Duchnowski <amidk75 at gmail.com> wrote:
> Ulf Magnusson pisze:
>
>
> > I've installed the latest version of MPlayer from SVN with the
> > following commands:
>
> > $ configure --prefix=/Users/ulf/svnmp
> > $ make
> > $ make install
>
> > I had installed x264 prior to this. MEncoder reports the following
> > codecs to be available:
>
> > $ mencoder -ocv help
> > MEncoder dev-SVN-r25528-4.0.1 (C) 2000-2007 MPlayer Team
> > CPU: Genuine Intel(R) CPU            1400  @ 1.83GHz (Family: 6,
> > Model: 14, Stepping: 8)
> > CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
> > Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2
>
> > Available codecs:
> >    copy     - frame copy, without re-encoding. Doesn't work with filters.
> >    frameno  - special audio-only file for 3-pass encoding, see DOCS.
> >    raw      - uncompressed video. Use fourcc option to set format explicitly.
> >    lavc     - libavcodec codecs - best quality!
> >    vfw      - VfW DLLs, read DOCS/HTML/en/encoding-guide.html.
> >    qtvideo  - QuickTime DLLs, currently only SVQ1/3 are supported.
> >    x264     - H.264 encoding
>
> > When I try to encode a file using the command (I realize this might
> > not produce good output for other reasons):
>
> > $ mencoder ocourse.rm -o ipod.mp4                   \
> > -of lavf -lavfopts format=mp4         \
> > -ovc x264                             \
> > -oac lavc -lavcopts acodec=aac        \
> > -vf scale=320:240
>
> > I get the following error:
>
> > "
> > Couldn't find video filter 'x264'.
> > Failed to open the encoder.
>
> > Exiting...
> > "
>
> > If I instead try
>
> > $ mencoder ocourse.rm -o ipod.mp4     \
> > -of lavf -lavfopts format=mp4         \
> > -ovc lavc -lavcopts vcodec=libx264    \
> > -oac lavc -lavcopts acodec=aac        \
> > -vf scale=320:240
>
> > I get the error
>
> > "
> > Couldn't open video filter 'lavc'.
> > Failed to open the encoder.
>
> > Exiting...
> > "
>
> x264 haven't the default bitrate settings as other encoders so you must
> add either:
>   "-x264encopts qp=30:keyint=60"
> or
> "-x264encopts bitrate=400:keyint=60"
> or
> "-lavcopts vcodec=libx264:vqscale=30:keyint=60"
> or
> "-lavcopts vcodec=libx264:vbitrate=400:keyint=60"
>
> man mplayer
>
> --
> Krzysztof 'DK75' Duchnowski
> GetFirefox - http://www.mozilla.com/firefox/
> Konfiguracja UTF-8 dla czytników - http://evil.pl/pip/utf/
> _______________________________________________
> MPlayer-users mailing list
> MPlayer-users at mplayerhq.hu
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Okay, thanks.

Maybe it'd be good if MEncoder reported the error as "Insufficient
parameters for video filter <foo>, you need to specify <bar>". It's a
bit confusing when all it says is

Couldn't find video filter <foo>.
Failed to open the encoder.

/Ulf