Trim a video (or audio file)
Cut the boring parts off the start and end. Fast mode copies the streams untouched — instant and truly lossless; Frame-precise mode re-encodes for exact cuts. A built-in player helps you find the right timestamps.
How it works
- Drop a video or audio file. Videos get a preview player — pause where you want to cut and click “Use player position”.
- Set start and end. Type seconds (90), mm:ss (1:30) or hh:mm:ss. Leave the end empty to keep everything to the end.
- Pick a mode and trim. Fast = no quality loss, near-instant, cuts snap to keyframes (may start a couple of seconds early). Frame-precise = re-encodes for exact cuts.
Frequently asked questions
What does “cuts snap to keyframes” mean?
Video is stored as occasional full frames (keyframes) with deltas in between. Lossless cutting can only start at a keyframe — usually every 1–5 seconds — so Fast mode may include a little extra before your chosen start. Frame-precise mode re-encodes and cuts exactly where you asked.
Is Fast mode really lossless?
Yes — the video and audio data is copied byte-for-byte, just with a new start and end. No generation loss, and it takes seconds even for big files.
Can I trim MP3s and other audio?
Yes — the same tool trims audio files. Fast mode keeps the original format; Frame-precise mode outputs a clean MP3.
Is my video uploaded?
No. Trimming happens entirely in your browser.