[MEncoder-users] 4x timing deflation for TV-to-lavc mpeg2video - multiplexer problem?

[Garry Boyer]

Correction: MPlayer/incoming/garryb/garryb-timedeflate2.mpg

Was having firewall issues and it won't let me delete.  Sorry.

On 1/22/07, Garry Boyer <garryb at cc.gatech.edu> wrote:
> Okay, sent as "MPlayer/incoming/garryb/garryb-timedeflate.mpg".  The
> file was cut off via head -c 3000000 so this sample isn't entirely
> valid MPEG, but the time-deflation is still visible in Xine (haven't
> checked dvdauthor on this sample).
>
> BTW, I've seen conflicting advice on whether to use TSAF.  I've burned
> DVDs successfully both with and without.
>
> Also, remultiplexing it using mencoder and -oac/-ovc copy doesn't fix
> the timing problem either (although it still plays perfectly).
>
> On 1/22/07, Nico Sabbi <nsabbi at email.it> wrote:
> > Garry Boyer wrote:
> >
> > > 'm capturing from TV, directly to DVD-compliant mpeg2video (via
> > > lavc).  The resulting files have a four-times timing deflation
> > > although playback is entirely correct -- my guess is this is a problem
> > > with the muxer.
> > >
> > > To be specific, when I play it in Xine, the timer ticks one seconds
> > > every four seconds of actual time.  Similarly, if I tell "dvdauthor"
> > > to generate a chapter at 10 minutes, it will really occur at 40
> > > minutes.  Here is my command:
> > >
> > >
> > > sudo nice -n -10 mencoder \
> > > -of mpeg -oac lavc=1 -ovc lavc=1 -mpegopts format=dvd \
> > >  $INPUT \
> > >  -vf pp=tn:0:100:10000,softskip,harddup -sws 1 \
> > >  -srate 48000 \
> > >  -af lavcresample=48000 \
> > >  -ofps 30000/1001 \
> > > -lavcopts vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:\
> > > vbitrate=3000:keyint=25:acodec=ac3:abitrate=192:aspect=4/3:vstrict=0:\
> > > me_range=192:ildct:ilme:nr=250:\
> > > intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37,\
> > > 12,14,18,27,29,34,37,38,22,26,27,31,36,37,38,40,26,27,29,36,39,38,40,48,27,\
> > >
> > > 29,34,37,38,40,48,58,29,34,37,38,40,48,58,69,34,37,38,40,48,58,69,79\
> > > :inter_matrix=16,18,20,22,24,26,28,30,18,20,22,24,26,28,30,32,20,22,24,26,\
> > >
> > > 28,30,32,34,22,24,26,30,32,32,34,36,24,26,28,32,34,34,36,38,26,28,30,32,34,\
> > >
> > > 36,38,40,28,30,32,34,36,38,42,42,30,32,34,36,38,40,42,44 \
> > >  -o "$OUTFILE"
> > >
> >
> > upload a sample to incoming and post the filename, please
> >
> >
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