Video Joiner & Merger
Video Joiner & Merger
What is this tool?
A browser-based video editor for combining clips. Add your videos, drag to reorder them, pick an output resolution, and it stitches them into one MP4 using ffmpeg.wasm.
When to use it
- Combining several short clips into one video for sharing
- Joining screen-recording segments into a single walkthrough
- Merging clips shot at different resolutions into one consistent video
- Assembling a highlight reel from multiple source clips
- Putting together a multi-part recording as one file
How to use it
- 1Add two or more video files — they appear as a reorderable list
- 2Drag clips into the order you want them joined
- 3Choose an output resolution (1080p, 720p, or match the source)
- 4Click Merge and wait for encoding to finish
- 5Preview and download the combined MP4
Frequently asked questions
Do my clips need to be the same resolution?
No — the tool scales and pads clips to match your chosen output resolution automatically.
How long does merging take?
It depends on clip length and your device's processing power, since encoding runs locally; longer or higher-resolution videos take more time.
What's the output format?
MP4, encoded with H.264 video and AAC audio for broad compatibility.
Are my videos uploaded to a server?
No — merging happens entirely in your browser via WebAssembly.