Convert a MOV video (iPhone, QuickTime) to MP4 locally - usually losslessly in seconds, for maximum compatibility on any device. No upload.
Running locally on your device ...
Running locally on your device ...
0%
Your files never left your device
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
MOV is Apple's QuickTime container and the default format an iPhone records every video in. That is exactly where it becomes a problem: older Windows programs, some Android apps and plenty of web upload forms do not reliably recognise MOV or reject the import outright - MP4, by contrast, works practically everywhere.
Technically, MOV and MP4 are close relatives from the same container family, and an iPhone MOV almost always carries H.264 or H.265 picture plus AAC audio - codecs MP4 accepts without any trouble. That is why the tool simply repackages the file losslessly in the vast majority of cases (no picture or sound is recomputed), finishing in seconds rather than minutes.
Honest edge case: if the MOV file comes from professional editing software (e.g. a ProRes export from Final Cut Pro), that codec does not fit MP4's lossless copy set - the tool then automatically re-encodes instead of producing a broken file. Everything runs locally in the browser, with your video never uploaded.
| Input formats | MOV |
|---|---|
| Auto-conversion | MP4 |
| Output format | MP4 |
| Batch processing | No |
| Processing | Locally in your browser (WebCodecs) |
| File upload | None |
Limitations: In the vast majority of cases (H.264/H.265 + AAC, the standard iPhone case) this is a lossless repackage with no quality loss. If the MOV contains a professional codec like ProRes, the tool automatically re-encodes (a little quality is lost, as with any re-encode). One file per run, ~1 GB limit (4 GB/tab in the browser).
No, the entire conversion happens locally in your browser.
In the typical case (H.264/H.265 from an iPhone), no - a pure lossless repackage. Only a rare professional codec like ProRes needs a minimal re-encode.
MOV is Apple's own container - many Windows programs, Android apps and web forms do not reliably recognise it. MP4 is the more universal standard.
Yes, use the sibling tool "Convert MP4 to MOV".
Yes, in any current mobile browser just like on desktop - the file stays local.