MOV Trimmer — Trim QuickTime Files Online Free
iPhone and Mac cameras export to MOV. This trimmer cuts them frame-accurately without re-encoding — perfect for trimming a screen recording or a Live Photo before sharing.
Drag & drop your video here, or click to browse
Max file size: ~2 GB (memory permitting)
Why use this MOV Trimmer?
- Native MOV support — no need to convert to MP4 first.
- Stream-copy lossless: the H.264 / HEVC stream is repackaged with new boundaries.
- Browser-only — sensitive iPhone footage never leaves your device.
- Output stays MOV (or MP4 with one click via the Video Converter).
How to use it
Drop the MOV file onto the trimmer
iPhone exports up to 4 GB are typical; the trimmer handles them as long as your browser has enough memory.
Pick the start and end points
For LivePhoto-style clips, the typical good cut is 1.5 seconds.
Download the trimmed MOV
Output stays in QuickTime format, ready for AirDrop or Final Cut Pro.
What to watch out for
| ProRes is enormous | A minute of ProRes 422 is roughly 2 GB. Trimming one works, but the file has to fit in browser memory first, which is the practical ceiling on this format. |
|---|---|
| The output is still MOV | Stream copy keeps the codec, so a ProRes MOV stays a ProRes MOV. Convert afterwards if the destination wants H.264. |
| Apple metadata rides along | A trimmed MOV keeps its QuickTime metadata, including location and device. Run it through the Metadata Cleaner before sharing. |
FAQ
Will macOS QuickLook and Photos still preview the trimmed file?
Yes — the trimmer preserves the QuickTime container including the moov atom, so Preview, QuickLook, and Photos all behave normally.
My MOV uses HEVC — does that work?
Yes. Stream-copy operates at the container level, so H.264 and HEVC inside MOV both trim losslessly.
Does this run in my browser?
Yes — the tool uses FFmpeg compiled to WebAssembly. Your file never uploads to a server, never leaves your device, and there is no signup or watermark.