Trim video
Keep the seconds you choose from a MOV or MP4. The cut is re-encoded.
Video tools use FFmpeg (GPL-2.0-or-later).
About this tool
Trim keeps a start–end slice of a MOV or MP4 and re-encodes that slice in the browser. Use it to drop the ramble at the ends of a screen recording before you share it.
Cuts are not guaranteed frame-accurate like a professional NLE. The segment is transcoded so the result plays as a normal MP4. Files over 50 MB are blocked; around 10 MB the tab may already feel slow.
You set times; ffmpeg.wasm encodes the chosen span locally. 50 MB. Output is MP4. Audio in the span is kept unless the source had none.
How to trim a video
- Choose a MOV or MP4. Trimming re-encodes the span you pick.
- Set the start and end you want to keep.
- Trim and download the MP4.
50 MB. Re-encode, not a stream copy. Phones may struggle. Not a clip downloader.
FAQ
- Is the video uploaded to trim?
- No. ffmpeg runs in the tab.
- Why re-encode instead of cutting?
- A clean MP4 from arbitrary timestamps in the browser is more reliable as a transcode than as a copy of compressed GOPs.
- Can I mute while trimming?
- Not in one click. Trim, then Mute video / extract audio.
- Multiple segments?
- One span per run. Repeat and Merge is not a video concatenator in v1.
- GIF instead?
- Video to GIF uses the first 8 seconds at 320 px. Trim first if the gag is later in the file.
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