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Add RF dropouts

Open Break8731 opened this issue 1 year ago • 6 comments

There are still many VHS artifacts missing so this could be a start, here are some examples image-13 image-16

Break8731 avatar Mar 20 '24 08:03 Break8731

this looks like the head switching artifact moving upwards

nlolnlolnlolnlo avatar Mar 20 '24 09:03 nlolnlolnlolnlo

this looks like the head switching artifact moving upwards

Nope, It just appears and disappears it doesn't seem to move up and down, when I come back home I'll also send a video here

Break8731 avatar Mar 20 '24 10:03 Break8731

I've been meaning to implement this for a while, since I've noticed it in a lot of VHS recordings, but I still don't know how it works fully. It doesn't seem like the VCR necessarily repeats the previous line always, but it doesn't look exactly like head switching artifacts either.

valadaptive avatar Mar 20 '24 10:03 valadaptive

A VCR dropout occurs when the tape emulsion fails. It can be on one line and can last for a few nanoseconds, Most notably found in deinterlaced footage. It could be implemented under the "VHS" tab. This could be made with the color loss logic.

Degamisu avatar Mar 20 '24 12:03 Degamisu

A VCR dropout occurs when the tape emulsion fails. It can be on one line and can last for a few nanoseconds, Most notably found in deinterlaced footage. It could be implemented under the "VHS" tab. This could be made with the color loss logic.

I found an article that explains more in detail the causes of white noise and other type of dropouts and how to prevent them.

https://cool.culturalheritage.org/videopreservation/vid_guide/6/6.html

Break8731 avatar Mar 20 '24 15:03 Break8731

I'd assume it's this? https://www.avartifactatlas.com/artifacts/scratches_and_tape_wear.html The second example video looks pretty similar to what you're seeing there

UltraBlackLinux avatar Oct 02 '24 05:10 UltraBlackLinux