This runs in your browser. Nothing is uploaded. Longer clips take longer here than they would on a fast server. That's the trade-off for not sending the file.
About Split video
Cuts a clip into N equal parts in the browser and zips them. The file is never uploaded.
Equal parts, not a cue sheet. If you need a cut at 00:12 and 01:03, trim twice instead. N is 2–8 so a phone tab doesn't encode twelve copies of a movie. The zip is the point: one download, several clips.
Split video runs FFmpeg compiled to WebAssembly in this tab. The first visit of a video or audio tool fetches about 30 MB from this origin; after that it can stay cached. Your file isn't in that download and isn't POSTed anywhere. GPL FFmpeg, single-thread, same origin, no COEP experiment. That's the same encoder as convert, trim, and compress. This page is just a different argument list, with the same honesty about what the core can't mux.
You can open the network panel and watch. Encoding a long clip on a phone is slow because it's your CPU. That wait is the trade for not handing the file to a converter you found in a search ad. Reverse and boomerang cap duration so a two-hour file doesn't try to live backwards in RAM. If a codec inside a familiar extension is missing from this core, you get an error rather than a silent broken file. Subtitle generation and stem splitting aren't here; I won't pretend they are. Missing is better than a watermarked demo.
How to use Split video
- 1Drop a clip.
- 2Set parts.
- 3Click Split and download the zip.
What it won't do
- Equal parts only.
- Each part is re-encoded.
- Zip download, not a playlist.
Common questions
Can I mark arbitrary split points?
Not here. Equal slices only. Trim exists for one segment. If you need cuts at 00:12 and 01:03, run trim twice (or three times) and keep the pieces you want rather than forcing an equal-N grid onto a story that isn't evenly paced.
Does split upload the video?
No. The clip is read into the tab, FFmpeg cuts N equal parts, and the page zips them for download. Open the network panel if you want proof: you should see this origin, not a POST of the movie.
Why a zip?
Because N files at once is a zip, not N download dialogs. Each part is re-encoded, so a long source still takes a while on a phone. Cap is 2–8 parts so a tab doesn't try to encode a dozen copies of a feature film.
Related tools
Why this one doesn't upload your file
There is no server to upload to. This page is a static file, and the work happens in your browser using the same graphics and WebAssembly code that renders every other site you visit. Your file is read from disk into memory, processed, and handed back as a download. Once the page has loaded you can disconnect from the network entirely and it keeps working. The longer explanation