[FFmpeg-user] FFMpeg problem using fieldmatch and decimate filters to IVTC
Carl Eugen Hoyos
cehoyos at ag.or.at
Wed May 7 15:20:20 CEST 2014
Steve Boyer <steveboyer85 <at> gmail.com> writes:
> Right, fieldmatch is the actual reconstructing the
> progressive frames (PPPII --> PPPPP), but leaves a
> total of 4 unique frames and a duplicate frame for
> every 5 frames (by default). It in turn must be
> used with -vf decimate or -vf fps or -r or some other
> filter to remove the duplicate frame to achieve the
> 23.976 frame rate.
Are you sure -r works with fieldmatch? I thought it
breaks horribly and I don't think the fps filter
can work any better in the general case.
> >> -vf pullup,fps=24000/1001
> > This unfortunately does not work;-(
> > (This is documented iirc.)
> I've seen "-r is depreciated, use -vf fps=24000/1001,"
> "-r works fine," as well as "use -vf fps=fps=24000/1001."
Of course, "-r" is deprecated.
But pullup needs -r, this is documented afair.
> In my experience with other encodes, -r seems to
> work best as well.
(Assuming you mean the non-telecined use-case:)
Just as "-vf fps" it has advantages and disadvantages,
see various tickets but I believe this is completely
For the telecined use-case, I don't think the fps
filter can currently work.
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