How to Get Rid of YouTube Pre-Roll Ads

YouTube sends a video's ads in the same data as the video itself, so blocking ad servers isn't enough. Ultimate Adblocker removes the ad entries from that data before YouTube's player reads it, so the player has no pre-roll ads to schedule, and if an ad still starts, it's muted, sped through and skipped. It also hides the ad boxes in the feed and next to the player. It works in Chrome on a computer, not in the YouTube app, and when YouTube changes how it delivers ads, one can slip through until the next update.