Need MP4 for a platform or teammate? Supercut re-encodes to H.264 MP4 locally so conversion happens on your device, not a remote server.
Just type
“Convert this to MP4”
Works with
Load the source file in the editor, it stays local.
Say “convert to MP4.” Supercut re-encodes with browser-based FFmpeg.
Save the converted file. Your original never uploaded.
Supercut decodes, edits and exports your video entirely in your browser with WebAssembly. Your video files never leave your device. To plan the edit, the AI gets your request, the words said in your clip and its sound levels (both worked out on your device), and a few low-resolution frames only if you turn that on. Read more in our Privacy Policy.
Compress video to a smaller file size in your browser. Shrink clips for sharing without uploading them anywhere, your footage stays on your device.
Change video resolution and dimensions in your browser. Downscale for smaller files or match platform sizes, your footage never uploads.
Trim and cut video in your browser. Drop a clip, say where to cut, and download it, your footage never leaves your device. No upload, no watermark.
Make promos and social ads by typing what you want, in your browser. No editor to hire, no software to learn, and your footage never uploads.
Reframe, caption, and batch-process client clips in your browser. No uploading client footage to a third party, and no watermark on any export.
MP4 (H.264) plays everywhere, phones, browsers, social platforms, and editors.
Supercut uses high-quality encoding defaults. You can also compress separately if you need a smaller file.
Common inputs include MOV, WebM, MKV, and more.
Drop a clip and describe the edit, it runs right here in your browser.
Open the editor