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Old 18th July 2020, 16:08   #8  |  Link
scharfis_brain
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Join Date: Mar 2003
Location: Germany
Posts: 3,653
Since I've not seen a TV with a better deinterlacer than QTGMC,
I also tend to upscale any VHS-content to 720p50.

MPEG2 interlaced is a horrible mess:
- fast action still is very blocky with DVD compliant 9.8 Mbps.
- interlaced YUV 4:2:0 will smear chroma even more in the vertical direction and most Bluray-players won't handle interlaced 420 chroma gracefully (CUE)
- any effort done into denoising will be lost in MPEG-2 artifacting.
- most TV sharpeners will enhance all MPEG-2 related artifacts even more.

My workflow:
- adjust luma chroma to make it fit well into 16..235 Rec.601
- crop black bars and garbage from the outermost portions of the video
- use QTGMC with some VHS related tweaks (heavy chroma processing etc.)
- apply awarpsharp to align chroma to luma (formerly known as chroma transition improvement, CTI)
- enhance textures and detail with some sharpener, without introducing bloaty oversharpening
- nnedi3 for vertical doubling
- spline36resize to 960x720
- adding left and right borders according to taste (black, blurred zoom etc.)
- encode using x264
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