26.07.2020, 09:16
(25.07.2020, 16:46)While Selur Wrote: Tell me more, I mean, you know that you can change the order of the filters, right?
Well, yes and no.
Avisynth can change orders, I saw that.
But I don't see where the Crop/Resize can be changed, nor where Crop/Resize in relation to Avisynth or Vapoursynth can be changed.
Again, this is the order required for masking.
- deinterlaced (mask box may be cleaner edges if run before; technically can be run after as well)
- crop
- pad back to 720x480/576
- resize to 4:3, 640x480 NTSC or 720x540 PAL
What happens is that it crops, resizes, then pads. So you have the wrong AR.
Then it deinterlaces, and matte box edges can get fuzzy.
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Just FYI, for other readers, for anybody confused as to why matte is needing, VHS already has low resolution, with a fragile IQ. If you start to increase resolution, even the slightest, it artifacts. No amount of filtering can really fix this, which is also why upsizing VHS sources is a bad (nay, stupid) idea. And when you view this back on a TV (common for home movies!), not computer, it further crops in for set overscan. So you mask. Cover the overscan junk with black, so that it doesn't eat up bitrate, and look ugly on overscan-less viewing devices (aka computers).