MOV to MP4 Converter

MOV is Apple's QuickTime container: iPhones, Macs and many cameras save video in it. Windows apps, Android phones, web upload forms and video editors often expect MP4 instead. Because both containers can hold the same H.264 and HEVC video, the fast mode simply moves the video and sound into an MP4 without touching them — no quality loss, and it takes seconds even for long clips. Everything runs in your browser; your videos are not uploaded.

How to use this tool

1. Choose one or more .mov files.
2. Keep "Fast" for iPhone and most camera videos; choose "Most compatible" if the MP4 must play on older Windows PCs, TVs or Android phones.
3. Press Calculate. Fast mode finishes almost instantly; re-encoding shows a progress bar.
4. Download the MP4 (several files can be downloaded as one ZIP).

Formula

Fast: MP4 = same video stream + same (or AAC) audio stream, new container

Stream copy keeps every frame bit-for-bit. Uncompressed PCM or ALAC sound is converted to AAC, because MP4 players expect AAC. HEVC keeps the hvc1 tag Apple devices need, and the rotation flag of portrait videos is kept. ProRes, Motion JPEG and other editing codecs cannot go into an MP4 and are re-encoded to H.264.

Example

A 2-minute 4K iPhone clip of 540 MB in HEVC becomes an MP4 of almost exactly 540 MB in fast mode, in well under a minute. Re-encoding the same clip to H.264 would make it play on any device, but 4K encodes at only one or two frames per second in a browser, so it would take the better part of an hour.

HEVC, HDR and older devices

Recent iPhones record HEVC, often in HDR. A fast-mode MP4 keeps HEVC, which plays on iPhones, Macs and Android phones; Windows needs Microsoft's HEVC Video Extensions, which many PCs have preinstalled. "Most compatible" re-encodes to 8-bit H.264 and converts HDR to standard range, so colours look normal on any screen.