[mythtv-users] transcoding perfect dvd rips to xvid

[Jack Madison]

I just snagged and started using this "script" as well (without the
autoaspect, although I may give it a try to see if it makes a
difference).

I also get duplicate frame warnings every 4 frames.  Not sure if it's
because of how the video was ripped or some other cause.  


**To rip the DVD I use:

vlc dvd:/dev/dvd at 1 --sout "#standard{access=file,mux=ps,dst=dvdout.ps}"


**To transcode it I use (just added autoaspect to the script):

mencoder $INFILE -ovc lavc -lavcopts \
vcodec=mpeg4:vpass=1:turbo:vbitrate=1800:autoaspect -oac copy \
-o /dev/null

mencoder $INFILE -ovc lavc -lavcopts \
vcodec=mpeg4:mbd=2:trell:vpass=2:vbitrate=1800:autoaspect -oac copy -o \
$OUTFILE

Quality is really good (not perfect, I may up the vbitrate a bit more),
sound seems correctly sync'd, and video is smooth with no noticeable
stuttering (from the duplicate frames).  Video size dropped from ~6G to
~1.5G for the movie I just finished.  I'm only doing this for DVDs that
mythDVD can't handle (ARccOS or whatever), the rest I do from within
Myth.

On Tue, 2007-02-20 at 18:28 -0800, David Brodbeck wrote:
> Mike Schiller wrote:
> > ... and got good looking video and audio.  Unfortunately, I didn't
> > include the autoaspect=1 flag, so I got 3:2 letterbox as my output.

> 
> > 
> > There does seem to be one glitch in the process.  Both with and
> > without the autoaspect flag, every 4 frames I get an error:
> > 
> >    1 duplicate frame(s)!
> > 
> > Is this normal?
> 
> 
> I don't really know.  I've never transcoded a DVD, just MPEG2 recordings
> from my Myth box.  I usually get a few of those duplicate frame warnings
> and they seem to be harmless, but one every four frames isn't something
> I've encountered.
> 
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users