[FFmpeg-devel] [PATCH] [PATCH] lavfi: add inverse telecine filter
himangi774 at gmail.com
Wed Mar 11 12:03:41 CET 2015
On 11 March 2015 at 15:10, Clément Bœsch <u at pkh.me> wrote:
> On Wed, Mar 11, 2015 at 07:12:16AM +0000, Carl Eugen Hoyos wrote:
> > Timothy Gu <timothygu99 <at> gmail.com> writes:
> > > > This is an exact inverse of the telecine filter
> > > > unlike previously existing pullup and fieldmatch
> > > > ones.
> > >
> > > What's the difference between the three seemingly
> > > similar filters?
> > The other two are similar (speed and license are
> > different): They try to detect the telecined
> > frames and reconstruct the original progressive
> > stream even if cuts were made. They sometimes miss
> > telecined frames.
> > This filter does not detect anything, it applies a
> > fixed pattern to the input stream: It fails very
> > badly if the input was cut (and the pattern
> > changed),
> > it works perfectly for streams that
> > contain a constant pattern.
> Did this happen even once with real material?
We aim to have it work perfectly for such streams. It has not been tested
on a proper telecine stream yet. As the description mentions, this work is
still under progress. I am collecting suitable test samples and would like
to discuss the algorithm for any suggestions. Should I add the algorithm in
the description to gain feedback on it?
> > Carl Eugen
> Clément B.
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