Merge clips
Join your video clips into one, in the order you choose, right in your browser. Nothing is uploaded.
Files are processed in your browser and never uploaded.
How to use Merge clips
Add your files
Drop one or more video files onto the upload area, or tap the area to choose them from your device.
Run it
Press Merge them, Don →. The button stays disabled until there is something to work on, and each file shows its own progress and result.
Save the result
Press Quick · no download. Each finished file keeps a name based on the one you started with, so you can tell the versions apart.
What this tool does
Combine up to 250 video clips into one
Between 2 and 50 clips, each up to 1 GB, are joined end to end into a single video.
Reorder clips before merging
Reorder the clips with the arrows before merging, so the sequence is the one you want rather than the order you happened to add them.
Joins matching clips with no quality loss
When the clips already match, they are joined without re-encoding, so the result is as sharp as the source and much faster to produce.
Normalizes mixed clips to one size, frame rate and format
When they do not match, everything is brought to one size, frame rate and format first, which is what stops a merged file glitching halfway.
MP4 or WebM output
Output as MP4 or WebM, at 1080p, 720p or 480p, at 30 or 60 fps, with the audio kept or dropped.
No upload, no sign-up
Every frame is handled by your browser, so nothing is uploaded no matter how large the clips are.
Frequently asked questions
How many clips can I merge, and will my device cope?
You can add up to 250 clips. Everything runs on your device and all clips are held in memory while they are joined, so a large number of big clips can slow down or crash the tab. If your clips do not match, they are re-encoded to line them up, which is much slower and heavier than a plain join. On a phone or older machine, merge fewer or shorter clips at a time.
Are my videos uploaded anywhere?
No. The clips are joined inside your browser on your device, and nothing is ever sent to a server.
Will merging lose quality?
If all your clips already share the same format, size and frame rate, they are joined with no re-encoding at all, so there is zero quality loss and it is fast. If they differ, they have to be resized to a common frame and re-encoded to line up, which costs a little quality and takes longer. That is true of any video merger.
What size will the merged video be?
By default it matches your first clip, and the other clips are scaled to fit inside that frame with black bars if their shape is different, so nothing is stretched. You can also pick 1080p, 720p or 480p, and choose the frame rate and format.
Do my clips need the same format?
No. You can mix MP4, MOV, WebM and other common files. When they differ, the tool normalizes them to one size, frame rate and format so they play back as one smooth video.
Why does it download about 31 MB?
Joining mixed clips reliably needs a full video engine. This tool loads one (about 31 MB) directly from this site the first time you merge, then caches it. Nothing about your videos is sent anywhere.
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