PRIVATE BROWSER PROCESSING
Merge several video clips into one file, in the order you choose
Pick the clips, move them up or down, choose an output resolution, and combine them into one MP4. It is intentionally simpler than a timeline editor when all you need is A + B + C.
Video merger
Sometimes a full timeline is overkill
To make different clips compatible, the tool normalizes them to the selected resolution and 30 fps before joining. That means re-encoding, so long or high-resolution batches can be demanding in a browser.
Privacy and limitations
Processing uses FFmpeg WebAssembly locally. The video is not uploaded by this tool. Closing or refreshing the page clears the working file. Speed depends on the browser, device memory, source codec, duration, and resolution, and tools that re-encode are not lossless.
Common questions
Why are clips re-encoded before merging?
Inputs can differ in resolution, frame rate and codec. Normalizing them first makes the final join more reliable.
Is my video uploaded to DJAI?
No. The source file is read and processed in your browser on your device.
Why can the first run take longer?
The browser downloads an FFmpeg WebAssembly core of roughly 31 MB the first time processing is needed; caching can help later runs.
BUILD WITH DJAI
Want to build a tool like this one?
This tool runs entirely in the browser. Explore DJAI Academy’s practical building courses.