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[Anime] What are these lines in a .ISO DVD? (programming.dev)
submitted 7 months ago by to c/piracy@lemmy.dbzer0.com
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Playing with mpv.

They appear mostly on curvatures when the screen is "moving" vertically.

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[–] 9 points 7 months ago (3 children)

Ahh to be young(er), lots of old TV and media was in ntsc and pal format for broadcast, so it's interlaced cause bandwidth and storage media cost (you only need to refresh half the crt each pass). There used to be so many threads on doom 9 on the best pipeline for virtualdub(mod) to deintelace and make progressive encodes to divx etc

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  • [–] 8 points 7 months ago (2 children)

    Actually, interlaced video in NTSC signal was because the NTSC signal was what we used on old school televisions. An old school televisions used an interlaced scan to display the images. Displayed half the image in one scan and then another display the other one and it displayed both of them so fast it appeared to be one image. That’s why TV screens flicker.

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  • [–] 3 points 7 months ago (1 child)

    We are saying the same thing aren't we?

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  • [–] 6 points 7 months ago*

    Not exactly. It’s true that interlaced signals are good at low bandwidth, but the televisions themselves had an interlaced scan picture, so that’s the main reason why NTSC is broadcast interlaced. For the televisions themselves. When we moved away from analog video to digital video, even television signals in the United States began to transition to a progressive scan,, especially when we moved to HD and HDTVs

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