MadSync - Music Video Editor
Edit video to music with beat sync, lyrics, and stems.
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MadSync - Music Video Editor - Auto-lyrics, beats, stems. Offline and private. $49 once

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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.

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Hey, I'm Mike, solo dev behind MadSync. I built this because every beat-sync editor I found was either a subscription or cloud-based. I wanted a desktop tool I could own. The auto-lyrics feature is the one I'm most excited about. Drop in a song and it transcribes and syncs words to the vocals in 99+ languages. It's AI-powered, so it's not perfect every time, but it's fast and it gets you most of the way there. What would make this more useful to you?