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YouTube's next move might make it virtually impossible to block ads
(www.androidpolice.com)
This is a most excellent place for technology news and articles.
That's actually hurt by this because it uses timestamps supplied by users to work. But now they are off because the ads are of variable length. We can just hope that YouTube keeps the ability to link to a specific timestamp because then it has to calculate the difference and that can be used by Sponsorblock and adblockers alike.
But then those ads either need to be skippable or not skippable with some kind of metadata which can be used against it by injected scripts.