Video & Audio
MOV to MP4
Turn MOV videos into MP4, copied as they are whenever they can be. No upload, no signup.
Files stay on your device How it works
Drop files here, paste, or
MOV · up to 3 files, 25 MB each
Your files
Your file is ready
How to convert MOV to MP4
- Choose up to 3 MOV files, each up to 25 MB and 30 minutes long, or drop them on the box.
- Leave the H.264 option off unless the MP4 must play on an older device or app (see below).
- Press Convert to MP4, then download each copy, or all of them together as a ZIP: holiday-clip.mov becomes holiday-clip.mp4.
Why convert a MOV
MOV is the QuickTime format that iPhones, Macs and many cameras save video in. Plenty of apps, websites and upload forms ask for MP4 instead, and some refuse a MOV even when the video inside is the same. The two formats are close relatives, since MP4 grew out of QuickTime, so usually only the container changes, not the video in it.
What happens to the video and sound
- Copied, not re-encoded: H.264 and HEVC (H.265) video and AAC sound go into the MP4 exactly as they are. It’s fast, and no quality is lost.
- Other sound: converted to AAC, the sound format MP4 players expect. Firefox can’t make AAC, so there the sound is kept as it is.
- HEVC from iPhones: iPhones often record HEVC. Copied as it is, the MP4 plays wherever HEVC plays, and some older devices and apps can’t play it.
- The H.264 option: re-encodes HEVC video as H.264 for those devices. It takes longer, and video larger than 1920 × 1080, such as 4K, is scaled down to fit. H.264 video is copied either way.
Which browsers work
Copying works in current Chrome, Edge, Firefox and Safari. The H.264 option uses your browser’s own video encoder, and first it has to read the HEVC pictures: Safari 16.4 or later can; Chrome and Edge can only on computers whose hardware decodes HEVC; Firefox can’t. If your browser can’t, the page says so, and converting without the option still works.
Good to know
Your files stay on your device: the conversion runs in your browser, and nothing is uploaded. A copied MP4 keeps the video’s picture size and frame rate, and the note under each result says what’s inside and whether it was copied, such as “HEVC (H.265) video (copied, not re-encoded) · AAC sound (copied)”. To shorten a clip, use Trim Video; to make it smaller, use Compress Video; for screen recordings saved as WebM, use WebM to MP4.