[FFmpeg-devel] [PATCH] avfilter: port pullup filter from libmpcodecs

Carl Eugen Hoyos cehoyos at ag.or.at
Tue Sep 17 12:22:09 CEST 2013

Paul B Mahol <onemda <at> gmail.com> writes:

> On 9/17/13, Carl Eugen Hoyos <cehoyos <at> ag.or.at> wrote:
> > Paul B Mahol <onemda <at> gmail.com> writes:
> >
> >> > I believe it would be useful if the filter sets the reduced
> >> > framerate (or timebase?) on initialization, this would make
> >> > users' lives easier.
> >>
> >> But to what? Content can be mixed, and than you have no more
> >> cfr output.
> >
> > I thought that if you feed mixed 24000/1001 progressive and
> > 30000/1001 telecined content into pullup the output is cfr...
> > (and that is how mencoder -fps ... -ofps 24000/1001 works imo.)
> But pattern can change too.

Could you elaborate?

I thought "change" here usually means that the actual input 
content can change between progressive and telecined and 
that "changed pattern" means a bad edit. Both imo don't 
change the fact that the inverse telecined output should be 
progressive cfr.

But maybe I misunderstand?

Carl Eugen

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