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Read guide →Video Editor
Multi-track video editor that trims clips, stacks layers, and adds text and image overlays, then exports with FFmpeg.
Browser-based editor — short clips work best
Everything runs locally in your browser. For smooth editing and export, use short videos (ideally under 10-20 seconds) with minimal edits — a quick trim, one or two layers, light overlays. Longer footage, heavy multi-track timelines, or high-resolution exports can lag, freeze, or fail when memory fills up. Nothing is uploaded; your device does the work.
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Reviewed 2026-08-15
Free Video Editor – how it works
The video editor gives you a timeline with two video tracks, so you can lay one clip over another and control which one sits on top. Clips can be cut, retimed with a speed curve, hidden, or moved between tracks, and text and image overlays sit above both video rows.
Playback is handled by ordinary HTML video elements stacked in the preview, which is why scrubbing stays responsive. Export is a different job: FFmpeg compiled to WebAssembly composites the tracks bottom to top so the file you download matches what the preview showed.
This is a browser tool, not a replacement for Premiere or Resolve. It is aimed at the case where you have a short clip and a couple of edits to make, and installing an editor or uploading footage to a website would both be worse options.
How to use Video Editor online
- Add your first clip. Drop a video onto the upload area. The editor probes its duration and dimensions, pulls thumbnails for the timeline strip, and draws an audio waveform so you can see where the sound is.
- Cut, layer, and overlay. Drag the clip edges to trim, split at the playhead, or drop a second video onto the other track to layer it. The Video 1 row renders above Video 2. Text and image overlays are added from the side panel and positioned on the preview.
- Export the timeline. Start the export and watch the progress readout. FFmpeg renders each track in order, applies the overlays, and hands back an MP4. Keep the tab in the foreground while it works.
When to use it
- Trim a screen recording and stamp a title on it before sharing with a team.
- Put a webcam clip in the corner of a screen capture using the second video track.
- Cut a long demo down to the ten seconds that actually matter.
- Speed-ramp a slow section instead of exporting the whole clip at one rate.
Known limitations
- Everything is bounded by the memory one browser tab can claim. Clips under about 30 seconds are comfortable; multi-minute or 4K footage often stalls or fails with an out-of-memory error.
- Export re-encodes everything, so a clip that was trimmed but otherwise untouched will still lose a little quality compared with a stream copy. Use Trim Video when a plain cut is all you need.
- There is no project save. Closing or reloading the tab discards the timeline, so export before you walk away.
Frequently asked questions
Is my video uploaded to a server?
No. FFmpeg is compiled to WebAssembly and runs inside the page, so the file is read from your disk into the tab's own memory. Nothing about the video is sent to opentools.
How long a video can the editor handle?
Short clips work best. Under roughly 20 seconds with a couple of layers is reliable on a normal laptop. Beyond that, export time climbs quickly and the tab can run out of memory partway through a render.
Which clip appears on top when I stack two videos?
The upper timeline row, labelled Video 1, renders above Video 2 in both the preview and the exported file. Drag a clip between rows to change the stacking, or use the Hide control to take a track out of the composite.
What format does the export produce?
An MP4 with H.264 video, which plays in every current browser, phone, and editor. If you need WebM instead, export here and then run the result through Convert Video.
Why does the first render take longer?
The FFmpeg WebAssembly build is about 31 MB and has to download before the first job can start. The browser caches it afterwards, so later visits skip that step and begin encoding almost immediately.
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