Your phone clip starts with three seconds of pocket and ends with a thumb reaching for the stop button. A video trimmer keeps the part in between. You set a start time and an end time, check the range in the player and download the result as a WebM or MP4 file.
A video trimmer that records instead of cutting
The tool does not copy any part of the original file. It plays the range you chose and records that playback again. Most limits below follow from this one fact. Short jobs fit best: the five useful seconds of a bug reproduction, one answer from a long meeting, a screen capture without the silence at the end.
Marking the range
- Drop a video on the page or press Select video. The player shows the file with its duration and resolution.
- Scrub with the timeline slider to the first frame you want and press Now next to Start time. Repeat at the last frame for End time.
- Type exact seconds into the two number fields if you prefer. They move in steps of 0.1.
- Press Play selection. The player starts at the start mark and stops at the end mark.
- Press Trim & export video. A progress bar runs, then the browser saves
yourfile_trimmed.webm. Browsers that record MP4, such as Safari, save.mp4.
Why a 30-second cut takes 30 seconds
The browser plays the range in real time while it records, so the export lasts as long as the clip. The recording is encoded again, which costs a little quality. This is not a lossless cut. The output is WebM, or MP4 when the browser records MP4, drawn at the source resolution and captured at 30 frames per second.
The cut points are not frame-accurate. The tool stops when the player passes the end mark, so expect an error of a fraction of a second. Keep the tab in front during the export, because browsers slow down hidden tabs. You will also hear the audio from your speakers while it records. A range that is close to zero is refused with a message.
What it will not do
One range per file. No merging, no fades, no text. If your browser cannot play a file, the tool cannot open it.
Where the video file goes
The browser reads the file from your disk and plays it from a temporary local address. Pressing export sends no request, and you can confirm this in the network panel of your developer tools. The finished clip arrives as a normal download.