Video ToolsFree

Merge Videos

Combine multiple video files into one seamlessly. Drag to rearrange the clip order before merging. Supports MP4 and WebM. Processed entirely in-browser with FFmpeg.wasm — no server upload, no account, no watermark.

Drop your video anywhere, click to browse

MP4, MOV, WebM, AVI · Any format

Ctrl+Vto paste a copied file

Frequently Asked Questions

How many videos can I merge at once?▼
As many as you need, limited only by browser memory. Merging 5-10 clips under 100MB each works reliably.
Do the videos need to be the same format and resolution?▼
For best results, videos should have the same resolution and codec. Mismatched resolutions will cause FFmpeg to scale the smaller clips to match.
Can I control the order of the merged clips?▼
Yes. Drag the clips into your desired playback order before clicking merge.
Does merging add a watermark?▼
No. ToolBubble never adds watermarks. The output is a clean, unbranded video file.
What format is the merged output?▼
MP4, which is compatible with all devices, platforms, and video editing software.