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this post was submitted on 13 Jun 2024
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A solution would be for an extension to download the entire video 2x and delete the difference. But if you want to watch on 4k you'd need a connection that is pretty fast (although still in the range of what many people already have). However if they find a way to throttle the max speed on the server side for each client based on the quality they are watching, that would kill this possibility. You could block their cookies and throttling by IP on IPv4 would not be a possibility for them, but when everyone is on IPv6 idk.
But also processing the video on the fly to delete the difference in real time would be heavy, though at least I think it is possible to access the GPU with browser extensions via webGL but I am not sure if for HD and 4k that would be realistic for most people.
Usually ads have a significant volume above the content they sorround (which, by the way, is the thing annoys me the most), so you would only need to check audio for that, which is lot less load than processing the video.
Guessing you'd get a lot of false positives that way, but I like the ingenuity.
My kiddo watches stuff on youtube where the person on screen gets suddenly loud which could really mess with detecting ads by changes in volume. Apprently that is a widespread thing too.
This assumes the exact same ads will be injected in the same time markers for every viewer, every time. I doubt any of these will be true.
Edit: I got this backwards...
A less expensive method could be to retrieve the subtitle twice, or the subtitle from a premium account and check where the time offsets are.