Clément Bœsch <u <at> pkh.me> writes:
> > +The filter only works for constant frame rate input. If your input
> > +has mixed telecined and progressive content with changing framerate,
> > +try the <at> ref{pullup} filter.
>
> Well I don't mind much but then... how is pullup making
> any difference here actually?
You mean why does it work with pullup but not fieldmatch?
I honestly cannot answer, sorry...
> fieldmatch isn't actually touching the pts nor using them.
I wonder if that (together with using decimate) isn't the
problem.
But this is of course completely unrelated.
Just to sum it up:
pullup works fine and is fast for all samples I have seen,
it definitely misses many merging opportunities if the
horizontal motion is very low (meaning some frames with
artefacts remain for every real-world input).
fieldmatch is very slow, it is apparently able to
produce perfect output for badly cut input with constant
(telecined) framerate but it fails completely for mixed
content (as found on many DVD's).
Imo, fps=30000/1001,fieldmatch,decimate should fix this
but decimate unfortunately does not drop the frame that
fps inserted but a random (?) frame.
(Or fieldmatch finds matches in progressive input?)
Carl Eugen
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