[MPlayer-users] mencoder encoding with corrunpted slices

[D Richard Felker III]

On Fri, Dec 05, 2003 at 11:05:52AM +1100, jm wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> mencoder version: "MEncoder 1.0pre2-RPM-3.2 (C) 2000-2003 MPlayer Team"
> 
> I'm attempting to encode an MPEG-2 TS to MPEG-4 with following small
> script.
> 
> #!/bin/bash
> INFILE=clip1.mts
> OUTFILE=test.avi
> VF="scale=768:576,lavcdeint"
> AVCOPTS="vcodec=mpeg4:v4mv:vhq:keyint=50:vbitrate=1400"
> LAMEOPTS="abr=128"
>  
> mencoder -vf $VF -ovc lavc -lavcopts $AVCOPTS:vpass=1 \
> -oac mp3lame -lameopts $LAMEOPTS -o $OUTFILE $INFILE
> mencoder -vf $VF -ovc lavc -lavcopts $AVCOPTS:vpass=2 \
> -oac mp3lame -lameopts $LAMEOPTS -o $OUTFILE $INFILE
> 
> 
> The source file (clip1.mpg) contains broken slices which are encoded
> faithfully and reproduced in the out file (test.avi). I was wondering if
> there was a switch that would allow mencoder to ignore these
> corruptions. This seems to be possible as xine and vlc don't display the
> broken slices when playing the source file, yet mplayer does.
> 
> Failing a cli option, is there a filter that can be used to get the same
> result?

Look for error concealment options under -lavdopts in the man page.
You should be able to find a combination that works. You'll have to
use -vc ffmpeg2 to decode, since the default mpeg2 decoder (libmpeg2)
doesn't use -lavdopts, of course..

Rich