MadSync cuts your footage to the beat for you. Drop clips on the timeline and they snap to the drums. Auto-lyrics makes word-by-word karaoke captions, stem separation pulls out vocals and drums, plus audio visualizers and lo-fi atmosphere. Everything runs on your PC, offline and private. Free demo of the full app (watermark, 60s export cap). $49 once unlocks clean exports, no subscription.

MadSync is a Windows music video editor that cuts footage to the beat for you. Drop clips on the timeline and they snap to the drums. Auto-lyrics turns your song into timed karaoke captions, full-sentence or word-by-word. Stem separation pulls out vocals and drums. Everything runs on your PC: songs and footage never leave your machine, and editing works offline. Free demo included: the full app with a watermark and 60s export cap. One-time $49 unlocks clean exports, no subscription.