mov → mp4
MOV to MP4, usually without touching the picture
QuickTime and iPhone video, converted into a file Windows and Android will actually open. Most files finish in seconds because nothing needs re-encoding.
Files are processed on your device · nothing is uploaded, stored or logged
How it works
Pick your file. The browser reads it straight from disk. There is no upload progress bar, because there is no upload.
The encoder loads once. A WebAssembly build of FFmpeg, around 30 MB, downloads the first time you use the site and stays cached afterwards.
Your processor does the work. Everything happens in this tab, at roughly half of real time on a modern laptop.
Save the result. The finished file is assembled in memory and handed to your downloads folder.
Why this one is usually instant
MOV and MP4 are close relatives. Both are containers built on the same underlying format, and both commonly hold H.264 video — the difference is mostly the wrapper. When that is the case, the video stream can be lifted out and dropped into an MP4 untouched.
That is what this tool tries first. Nothing is decoded, nothing is re-compressed, and the result is bit-for-bit identical picture at a fraction of the time.
If the file turns out to hold ProRes or another format an MP4 cannot carry — common with footage from professional cameras and some Mac exports — the tool falls back to a full re-encode automatically. You do not have to choose.
Where MOV files come from
iPhones record in MOV by default, as do QuickTime Player, most Mac screen recorders and many DSLRs. The format works flawlessly on Apple hardware and causes friction almost everywhere else, which is why this conversion is one of the most searched of all.
iPhone footage is often 4K. To bring it down to a more shareable size, use change resolution.
Common questions
Will I lose quality?
In most cases none at all, because the video is copied rather than re-encoded. If your file needs the fallback path, the loss at Balanced is not visible in normal viewing.
Why did mine take longer than seconds?
It held a codec that MP4 cannot carry, most likely ProRes, so the tool re-encoded it. That is normal and the result is still correct.
Does it work with iPhone HEVC video?
Yes, though HEVC files usually need the fallback path since many players expect H.264 inside an MP4.
Do my files get uploaded?
No. The file is read from your disk by the browser and never sent anywhere.