Video Trimmer
Trim any video to a precise start and end time, entirely in your browser. The default lossless mode uses stream-copy for near-instant trims; flip on re-encode when you need a frame-accurate cut. FFmpeg.wasm runs locally so your file never touches a server.
How to use this tool
- 01
Upload your video
Any format FFmpeg supports — MP4, WebM, MOV, MKV. It stays in your browser.
- 02
Set start and end times
Enter the in and out points in HH:MM:SS; the trimmed duration updates live.
- 03
Pick encoding mode
Fast / lossless stream copy for speed, or re-encode for a frame-accurate cut.
- 04
Trim and download
Fast mode is near-instant for small cuts; preview the result, then download.
Why this matters
Trimming is the single most common video edit on the planet, and almost every online trimmer demands a full upload of your raw footage before it will let you cut a 10-second clip — slow, bandwidth-burning, and a privacy risk for unreleased or NDA material.
This trims in your browser: stream copy is near-instant and lossless (a 2 GB source clipped to 30 seconds takes seconds, not minutes), and when you need the cut exactly on the millisecond, the same tool re-encodes locally with libx264 at sane defaults. To assemble several trimmed pieces into one video, follow up with the Video Merger.
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FAQ
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