Paste in a few YouTube links, nudge each one's offset until the audio cues line up, then share the synced link. Built for multi-angle footage — races, panels, multiplayer POVs.
MultiSync is a lightweight, browser-only tool for lining up several YouTube videos to the same moment in time. It grew out of a simple problem: when an event is filmed from more than one angle — a race with cameras at different points on the track, a panel with each speaker's own recording, or several players' streams of the same match — there was no easy way to watch them side by side, in step, without downloading and editing them together.
Add each video, then use the offset buttons to shift one relative to the others until a shared sound or visual cue happens at the same instant on every tile — a starting gun, a word spoken into several microphones, anything with a distinct moment. The solo-audio button isolates one video's sound at a time so you can match that cue by ear before playing the group together.
Editing multiple angles into one file takes real time and re-uploading rights you may not have. MultiSync keeps every video on YouTube, under its original owner, and simply plays them together in your browser — nothing is downloaded, re-hosted, or modified.
Anyone comparing multiple recordings of one event: race organizers, esports viewers watching several players' points of view, conference attendees with recordings from more than one seat, or hobbyists syncing reaction videos. The project is independent and isn't affiliated with YouTube.