[mythtv-users] Ripping DVD's
yan at seiner.com
Thu Mar 15 15:55:44 UTC 2007
matthew.garman at gmail.com wrote:
> On Wed, Mar 14, 2007 at 03:42:12PM -0800, Yan Seiner wrote:
>> # for 'major motion picture' (i.e. telecine) stuff you want the
>> following two lines (comment out for TV source)
> I don't think you can generalize as much as you suggest. I've found
> that I rarely need them for movies from a purchased DVD, but I need
> them about 50% of the time on TV episodes from a purchased DVD.
> Inferring from
> , there's no automated way to determine what kind of source material
> you have. But the referenced document will tell you how to identify
> it manually.
Interesting reading, that. What I do works for most of the material I
get; occasionally I get chopiness that I attribute to dropped framed or
bad de-interlace/de-telecine, but not enough to really spend a lot of
time fiddling with it.
I don't quite understand about the 60000/1001 frame rate, though. That
seems to be recent. I think I need to do a bit more reading and perhaps
monitor the mplayer list again....
>> mencoder dvd://$TRACK \
>> -vf $VF -ovc lavc -oac lavc \
>> -lavcopts vcodec=mpeg4:vpass=1:turbo:acodec=mp2:aspect=$ASPECT:vbitrate=$BITRATE \
>> -ofps $OFPS $AVILANG -o $TITLE-$TRACK.avi
> My personal opinion is to use -ovc x264 and equivalent -x264encopts.
> x264 is the open source implementation of the H.264 standard; it
> generally provides higher-quality at a lower bitrate (which
> generally means you save on disk space). Of course, it takes even
> *longer* to encode to H.264 :)
ARGH! The pace of progress.... I've been using that script (or
variations of it) for about 6 years. mplayer/mencoder has changed a lot
during that time. Every time I figure out something works, something
better comes along.... Now to read up on h.264....
>> "skipping frame" or "duplicate frame" you selected the wrong
>> framerate and deinterlace method. Re-edit the script and
>> uncomment the other two lines. Movies usually change frame
>> rates/interlace methods several times during titles, so wait about
>> 5 or 10 minutes before you panic. If 'skipping frame' is still
>> scrolling by 5 minutes into the movie, you have the wrong
>> deinterlace method picked.
> You can run mplayer with the -benchmark -vo null -nosound parameters
> before you start encoding; this will quickly give you some insight
> as to whether or not you'll get those kinds of messages. (Again,
> see the document I referenced above.)
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