[MPlayer-users] Can't pipe VOBs to mencoder...

[Loren Merritt]

On Thu, 22 Apr 2004, D Richard Felker III wrote:
> On Thu, Apr 22, 2004 at 05:30:43PM -0700, Brian wrote:
> >
> > I have been using the mencoder man pages as a reference where an example is
> > used:
> >
> >        Encoding from a pipe
> >               rar p test-SVCD.rar  |  mencoder  -ovc  divx4  -di-
> >               vx4opts br=800 -ofps 24 -
> >
> >        Encoding multiple *.vob files
> >               cat *.vob | mencoder <options> -
>
> The second example was removed in CVS because it's a very bad idea.
> The first one (with rar) should be removed too. MEncoder is buggy when
> encoding from pipe with certain formats, because the demuxer wants to
> be able to seek.
>
> Rich

The first is wrong for another reason: You need
  rar p -ierr foo.rar | ...
Otherwise rar outputs both the decompressed data and its progress report
to stdout, so you get chunks of text interspersed periodically in your
video stream.

--Loren Merritt