Typically, a YouTube video will play and then YouTube pauses the video to run an advertisement. Ad blockers can generally bypass the ad by blocking JavaScript that YouTube uses to inject the ads. With server-side ad injection, the user is fed one continuous stream of video with the ad included, thus bypassing the ad blocker.
The change impacts ad blockers like SponsorBlock that rely on timestamps to block ads, with server-side ad injection rendering them ineffective. SponsorBlock is filtering out submissions regarding server-side ads to maintain database integrity while seeking solutions.
YouTube emphasizes that ad blockers violate its Terms of Service, encouraging viewers to support creators by allowing ads or subscribing to YouTube Premium for an ad-free experience.
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