Choose the files to process — you can select more than one. They’re handled locally and never uploaded.
Settings
Result appears here after you select
{ } How to use
- Choose two or more videos. They are joined in the order they appear in the list.
- Pick an output width — every clip is scaled to it so they line up.
- Select Process, then download the result.
{ } How it works
Merge Videos works on the files you upload. Adjust the options, then select Process ▸ and it runs entirely in your browser — nothing is uploaded to a server — then shows the result in the Output panel.
Inputs
- Videos — add the files to process (video/*); they are read locally in your browser
- Output width (px) — choose one — 854 (480p), 1280 (720p), 1920 (1080p) (default: 1280 (720p))
Output
A downloadable MP4 file — use the Download button in the Output panel.
{ } Common uses
- Stitch clips from one shoot into a single video.
- Add an intro or outro to an existing video.
- Combine screen recordings made in several takes.
{ } Limitations
- The clips are re-encoded rather than copied, because joining without re-encoding requires every input to share codec, resolution and frame rate — and clips people actually want to join rarely do. It is slower, but it works on files that would otherwise be refused.
- Ten videos at a time, and the whole job has to fit in memory at once, so keep the total length modest.
- Every clip is scaled to a common width. A portrait clip mixed with landscape ones will be letterboxed rather than cropped.
{ } FAQ
Is my data uploaded to a server?
No. Everything runs locally in your browser — your files never leave your device.
Can I process more than one file at once?
Yes — add several files and they’re all processed and downloaded together as a ZIP.
Is this tool free?
Yes — it’s completely free and needs no sign-up.
Why does merging take so long?
Because the videos are decoded and re-encoded rather than stapled together. The fast method needs all the inputs to match exactly in codec, resolution and frame rate; when they do not, it produces a file that stutters or has no sound after the first clip. Re-encoding is the version that always works.
What order do the videos go in?
The order they appear in the file list, which is the order you selected them. To change it, remove them and add them again in the order you want.