Trim Video
Pick the range to keep with the start and end handles. Start on a keyframe for a lossless save.
To join several videos or photos, or add captions and music, use the Video Editor.
Reading the video…
Your browser cannot play this codec, so there is no preview. Trimming still works.
How to Use
Drop or click to pick an MP4, MOV, WebM or MKV file.
Drag the start and end handles, or press "Set start/end here" while playing. Bring the start handle near a keyframe tick and it snaps on and the lossless badge lights up.
Lossless cuts finish in seconds; re-encoding takes time proportional to the clip length.
FAQ
Can I join several videos or add captions and music?
Use the Video Editor for that. This page only cuts a range out of a single video.
Why does only the start need to sit on a keyframe?
Video is stored as keyframes — complete pictures a few seconds apart — plus the differences between them. Starting anywhere else means everything from the previous keyframe has to be recomputed, which is what re-encoding is. Cutting the end only throws away later data, so it is always lossless.
How different are lossless and re-encoded results?
Lossless copies the original data into a new container, so the picture is identical to the source and the job usually finishes in seconds. Re-encoding recalculates every frame, so it takes time proportional to the clip length and gives up a little quality.
Which formats can I use?
It reads most video files — MP4, MOV, WebM, MKV and more — and always writes MP4. The preview only appears when your browser can play the codec; even when it cannot (iPhone HEVC MOV, for example), trimming itself still works.
Does it handle large files?
The input is read in pieces, so large files open fine. The result is held in memory until you download it, so on a phone a very large file (several GB) may fail.
Can I remove or keep only the audio?
You can mute and downscale. Audio-only export is not provided.
