MP4 to MOV Converter

MOV is the QuickTime container used by Apple devices and editing software. An MP4 and a MOV can hold exactly the same H.264 or HEVC video, so the default here simply moves the video and sound into a MOV without touching them: instant, at any size, with no quality loss. For editing, the converter can also make Apple ProRes 422, the intermediate format that Final Cut Pro, Premiere Pro and DaVinci Resolve scrub through smoothly. Everything runs in your browser with the ffmpeg engine (about 30 MB, downloaded the first time); nothing is uploaded.

How to use this tool

1. Choose the target: the same video in a MOV, an H.264 MOV, or ProRes 422 (and its flavour).
2. Choose one or more MP4 files; conversion starts right away.
3. Repackaging finishes in seconds; re-encoding shows a progress bar.
4. Download the MOV files (several come as one ZIP).

Formula

ProRes size (MB) ≈ data rate (Mbit/s) × seconds ÷ 8

Apple's published target rates for 1920 × 1080 at 29.97 fps are about 45 Mbit/s for ProRes 422 Proxy, 102 for LT, 147 for ProRes 422 and 220 for HQ. ProRes here is 10-bit 4:2:2 with uncompressed 16-bit PCM sound, as editors expect. Repackaging keeps HEVC with the hvc1 tag Apple software needs, along with rotation and text subtitles.

Example

A 2-minute 1080p phone clip of 240 MB becomes a 240 MB MOV in a few seconds when repackaged. As ProRes 422 it becomes about 147 × 120 ÷ 8 ≈ 2.2 GB, and encoding it in a browser takes a long time — roughly an hour at 1080p — so ProRes is best for short clips.