Hi. I would like to remove the blending in this source. I get decent results with qtgmc.srestore(frate=23.976) but i would like to know if it can be improved.
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In addition to the field blending there's some temporal ghosting. I don't see any easy way to get rid of the latter.
You can confirm by finding a place where there's movement every frame (like a panning shot) and making sure the movement (after being unblended to 23.976fps) is fluid with no duplicate frames or missing frames.
Yes, the correct frame rate is 23.976. It could be 24 but that's not likely (it's hard to tell the difference). Field blended PAL videos like this usually come from NTSC video tapes passed through a NTSC->PAL converter that blends fields. So 23.976 is almost always right. The first clip (I haven't looked at the second) has some long motion shots where you can see steady motion at 23.976 -- there are no duplicate frames and no jumps in the motion.
But after restoring the 23.976 frame rate many of the frames contain ghosting of previous or later frames, some mild, some heavy, only of moving parts of the picture. That is temporal ghosting (probably from a bad noise reduction filter). Compare that to spacial ghosting where multipath tv reception results in a ghost that's shift slightly to the right (usually) of the main picture, even on still shots.
Thanks for the info manono and jagabo. I will stick with qtgmc.srestore(frate=23.976). The ghosting was not noticeable on playback.