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

[Phil Ehrens]

RC wrote:
> On Tue, 29 Nov 2005 20:46:25 -0800
> Phil Ehrens <phil at slug.org> wrote:
> 
> > 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).
> 
> And how is mencoder reversing the hard telecining (to give you
> progressive fields) without any ivtc filters like pullup?  It'll give
> you 24000/1001 fps output, but it'll be a lot of mismatched fields.

Well, the result looks fine, and when I reencode the rip to make a
dvd (say, with 2 movies on it) it comes out just fine as well.
Mencoder does spit out messages on stdout/stderr saying that it is
detecting the frame rate change, perhaps it defaults to using some
form of pullup in this situation?

Or perhaps it is just luck, and things look right because the main
title is generally 24 fps in cinematic releases anyway? The changing
frame rate is normally just during the inital titles, when it would
be less noticeable if something subtle were wrong.

Maybe I just haven't hit a dvd where things would go wrong. I admit to
having transcoded very few dvd's. The vast preponderence of material
that I work with is P2P files.

The video/sound sync is perfect.