[MEncoder-users] anime,pullup,skipped/duplicated frames

Rich Felker dalias at aerifal.cx
Thu Dec 1 00:35:40 CET 2005


On Wed, Nov 30, 2005 at 11:04:11AM -0800, Phil Ehrens wrote:
> Rich Felker wrote:
> > On Tue, Nov 29, 2005 at 08:46:25PM -0800, Phil Ehrens wrote:
> > > Rich Felker wrote:
> > > > On Tue, Nov 29, 2005 at 11:21:25PM +0100, Gábor Farkas wrote:
> > > > > hi,
> > > > > 
> > > > > i am trying to encode something from an anime dvd.
> > > > 
> > > > > should i maybe try a different -ofps?
> > > > 
> > > > 24000/1001 is almost certainly right, but there are some rare cases
> > > > where anime also has 30fps content mixed in.. you'll have to watch to
> > > > see, but there's still really nothing good you can do since mencoder
> > > > does not support vfr (variable framerate) and most of the content will
> > > > be 24000/1001.
> > > 
> > > Boy, my mencoder must be magic. Somehow I can transcode a dvd that has
> > > varying frame rates to a constant frame rate .avi... and I don't even
> > > have to specify -vf pullup, it just does the right thing, dropping
> > > frames when necessary, or adding them as the case may be (depending
> > > on what -ofps I specify, of course).
> > 
> > pullup is not about getting the correct number of frames, but
> > reversing hard-telecine (where the pairing of fields in the dvd mpeg
> > don't match actual frames).
> 
> Sorry, I didn't mean to imply that they were the same thing, just
> that the right thing seemed to be getting done.

Yeah, as long as the only '30fps' zones are just stupid still
title/credit screens added to the dvd that weren't in the original
movie, it doesn't matter if you use an ivtc filter or just -ofps by
itself. However it does matter if the movie has a mix of hard and soft
telecine.

Rich





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