|
An alternative to BWDIF is Tdeint as motion adaptive deinterlacer to weave progressive content sections . You can use edeint with a 2nd clip for the replacement pixels for either BWDIF or TDeint, such as QTGMC or NNEDI3, which will produce better results on the interlaced content sections, but slower. But it should be faster than pure QTGMC
The BW in BWDIF stands for Bob Weaver (so it weaves static content,in theory, similar to TDeint) - but you can see the distortions and glitches mentioned in the OP in that patterns when using BWDIF, or the text in the clip section. TDeint is much cleaner on that test pattern and diagonals (such as the eyeglasses) on the actual clip in terms of aliasing artifacts
tdeint(order=1, mode=1, edeint=nnedi3(field=3))
prefetch(something)
This will produce good results on a test pattern, but it will usually produce worse results on typical interlaced content compared to full QTGMC in terms of aliasing and flicker artifacts. On the other hand, the weaved progressive sections will have full resolution compared to QTGMC. Distributed interlaced content is usually low passed in a dumb manner (even static sections which shouldn't be low passed), so you often never have 1 pixel vertical resolution content. But TDeint is a good alternative, if you have full resolution progressive sections, where you don't want QTGMC smoothing details too much
The other option is VFR, where progressive sections are weaved and decimated, and interlaced sections are deinterlaced, everything runs at it's native content framerate. (25p at 25p, 29.97p at 29.97, 50p at 50p etc...) . I think ctools can do this, but I havent tested it fully yet. The original TIVTC VFR had issues with 50p/59.94p timecodes
|