I have a video which was orginally shot progressive, then encoded as interlaced. How
can I most efficiently get back to the original progressive frames?
For real deinterlacing, I usually use -vf "yadif=0:-1:0". That works very well with
material shot as interlaced, but requires a lot of processing.
In this particular case, I don't need any sort of smart processing. Fields 1 and 2 of
my "pseudo-interlaced" movie only need to be added together into a progressive frame.
But I cannot find the correct filter to do this very simple task. And I obviously
want to make sure I'm not just dropping every second field, and losing resolution.
Or is there a summary somewhere on the various deinterlace options, with a
description of what they do exactly? I couldn't find it.
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