[MPlayer-dev-eng] Re: mencoder frame skip behavior broken

[D Richard Felker III]

On Tue, Feb 18, 2003 at 07:01:37PM +0000, Jason Lunz wrote:
> dalias at aerifal.cx said:
> > If your or anyone else has some telecine material I could experiment
> > with, it would be very helpful. I imagine the threshold parameters and
> 
> Do you have the dolby trailers? They're pretty good examples of
> cleanly-telecined video. google for dolby-city.vob (there are other
> trailers named dolby-*.vob) and try your filter on them. A perfect
> inverse telecine on these videos should yield nothing but clean
> progressive frames.

I found them, and for the most part my filter does fine. Of course it
can't do anything with the all-black time before the video starts.
Also with the default thresholds I used for Lain, it failed to
properly detect the first telecined frame and instead caught the
second one of the sequence, but it quickly realized its error and
resynced for the rest of the video. Adjusting the thresholds slightly
or else using a 2-pass approach should resolve the problem.

Since no one has objected to my proposed mencoder fix, I'll probably
commit it soon. I might wait a few days to commit the detc
(de-telecine) filter, though, since it's not yet configurable, and I
don't want to pollute the cvs logs with lots of useless spam as I
tweak it.

Rich