MOV is Apple's default video format. It is great on a Mac or iPhone but awkward to share with people on Windows, Android, or some social apps. MP4 plays almost everywhere. With Supercut you convert MOV to MP4 by typing a plain-English prompt in your browser. Your video never leaves your device, and the first export is free with no account.
MOV and MP4 are both containers. A container wraps the video and audio streams inside one file. They are close cousins: both commonly hold H.264 or HEVC video and AAC audio. The real difference is reach. MOV (.mov) was built by Apple for QuickTime and is what your iPhone and Mac record by default. MP4 (.mp4) is the universal standard that Windows, Android, web browsers, editing tools, and every major social platform accept without complaint. That overlap is why converting MOV to MP4 is usually quick and clean. You are mostly changing the wrapper, not rebuilding the video, so quality stays high. In Supercut you describe the conversion in plain English and a deterministic engine maps it to the right FFmpeg settings before anything runs.
Most online converters ask you to upload your video to their servers, wait in a queue, then download the result. That means a copy of your footage sits on someone else's machine, and large MOV files from a phone or camera can take a long time to send. Supercut runs the conversion on your own device using WebAssembly (FFmpeg compiled to run in the browser). The file is read locally, converted locally, and saved locally. Nothing is uploaded. Only the text of your prompt is sent, so the AI knows you want an MP4. Once the page has loaded you can even go offline and the conversion still works.
An MP4 is the right starting point for almost any next step. If the file is still too big to email or upload, compress it. If you are posting to TikTok, Reels, or Shorts, reframe it to a vertical aspect ratio. If you only need the sound, pull the audio out as an MP3. Everything works the same way in Supercut: drop the clip, type what you want, confirm, export. You can also stack requests in one prompt, for example convert to MP4 and trim the first five seconds together, so you rarely need a separate app for each task.
Go to supercut.cc and drag your .mov file into the browser, or click to pick it from your device. The file loads locally. It is not uploaded anywhere.
In the command box, type something like "convert this to MP4". The AI plans the edit and a deterministic engine maps it to the right FFmpeg settings. You can ask for more in the same prompt, such as "convert to MP4 and compress for email".
Supercut shows you the operation it is about to run so you can check it matches what you wanted. If it is off, reword the prompt and try again before you export.
Click export. The conversion runs on your device and saves a new .mp4 file. Your first export is free with no account. Paid plans unlock unlimited watermark-free exports and every tool.
Convert MOV, WebM, or other formats to MP4 in your browser. Universal playback without uploading your source file.
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.
No. Supercut decodes, converts, and exports entirely in your browser on your own device. Your footage is never uploaded. Only your text prompt is sent so the AI knows you want an MP4.
You should not see a meaningful drop. MOV and MP4 often hold the same H.264 or HEVC video, so converting is mostly a container change rather than a full rebuild, which keeps quality high.
You can try your first export free with no account. Paid plans unlock unlimited watermark-free exports and every tool, starting at 4.99/mo billed yearly (59.88/yr), 9.99/mo monthly, or 199 one-time lifetime. Cancel anytime.
Yes. Because the work happens on your device, there is no upload wait. Very large files use browser memory, so extremely big clips can be limited by your device, but typical phone and camera recordings convert fine.
No. Supercut runs in your browser at supercut.cc. There is no app or plugin to install to convert MOV to MP4.