Clips are joined end to end in the order above. Drag and drop again to add more files.
Videos are re-encoded during merging; depending on the number and length of clips, this can take a while.
If a clip has no audio track, that section stays silent; the merge still completes.
How Does Video Cutting and Merging Work?
This tool opens your video with your browser's built-in WebCodecs engine. In "Cut" mode you pick a start and end point on the preview; the tool copies the video/audio stream without re-encoding whenever possible, and automatically re-encodes when needed (e.g. when the selection doesn't start at the beginning, or a different output format is chosen). In "Merge" mode the clips you select are decoded frame by frame and re-encoded into a single video stream in the order you list them; clips with a different resolution are automatically fitted to the first clip's size. This tool only processes the file you upload; it does not download any content on your behalf. Only use videos that you own or that you have the right to edit.
The most common uses are trimming unnecessary parts from the start or end of a recording, cutting out just the highlight from a long video, or joining clips recorded in pieces on a phone, or screen recordings, into a single file. You can download the result as MP4 (widest compatibility), WebM (small file, open format) or MOV (compatible with Apple editing tools).
Your videos are never uploaded to a server — all trimming, merging and encoding happens entirely on your own device, inside your browser. This process uses the browser's WebCodecs API, so it requires a recent Chrome, Edge, Firefox (desktop) or Safari 16.4+; the tool may not work on very old browsers.
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Frequently Asked Questions
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