Most AI clippers guess what will go viral. CrestClip starts from what people actually rewatched: YouTube's "Most replayed" graph, timestamp comments and audio energy. The AI then grades every moment on 9 things like hook, payoff and shareability, and hands you vertical clips with word-by-word captions, a hook headline and a Crest score. Post or schedule to YouTube Shorts and Instagram Reels, or let Autopilot find, clip and post new videos for you. Free plan, no card needed.