Convert MOV to MP4

How to convert MOV to MP4

1. Drop up to 10 MOV files on the box above, or click to choose them. Nothing is uploaded.
2. Your browser converts them one after another, with a progress readout for each file.
3. Each MP4 downloads as soon as it is ready, with the same name as the original.

You do not need an account, and converting video does not use any of your monthly image allowance.

Why convert MOV to MP4?

MOV is Apple's QuickTime format, and it is what iPhones, Macs and many cameras save video as. Apple devices play it without a second thought, but plenty of other places do not: some Windows and Android players, editing apps, learning platforms and website upload forms only accept MP4. MP4 with H.264 video and AAC audio is the combination almost everything accepts.

There is a second catch with iPhone video. Since iOS 11, iPhones record in HEVC (H.265) by default, which saves space but needs a paid extension to play on some Windows PCs. Converting to H.264 MP4 solves both problems at once.

What the converter does to your video

• H.264 video (iPhone on Most Compatible, Mac screen recordings, many cameras): copied into the MP4 without re-encoding. The picture is identical to the original and even long clips convert in seconds.
• HEVC video (iPhone default): re-encoded to H.264 at the same bitrate as the original. If your browser cannot read HEVC, the video is kept as HEVC inside the MP4 instead, and the page tells you.
• HDR video: the HDR color information is kept, so iPhone HDR clips still look right on HDR screens.
• Audio: AAC audio is copied as it is. Other audio is re-encoded to AAC, or kept as it is if your browser cannot encode AAC.
• Orientation, size and length: portrait clips stay portrait, with the same resolution and running time as the MOV.
• File size: about the same as your MOV.

H.264 needs more bits than HEVC for the same picture, so at the same bitrate very detailed or fast-moving HEVC footage can look slightly softer after conversion. For most phone clips the difference is hard to see.

Why your video never leaves your device

The conversion runs in your browser tab, using the video encoder built into the browser (the WebCodecs API). Your file is read from your disk, converted in the tab and saved back to your downloads. It is never sent to Mochify or anyone else. Most online converters upload your file to a server first; for family videos, client footage or anything private, that difference matters.

Which browsers can convert

Desktop Chrome and Edge convert reliably. Safari (version 26 and later) and Firefox (version 130 and later on desktop) also include the browser video engine this page uses. Firefox on Android does not. If your browser cannot convert the file, the page tells you instead of failing silently.

For iPhone HEVC video, Safari and Chrome on a Mac give the best result, because they can re-encode HEVC to H.264. Chrome and Edge on Windows can too on most computers made in the last several years.

Long or high-resolution clips use a lot of memory, because the whole file is held in the tab while it converts. A desktop or laptop handles large files best.

Converting MOV to MP4 without a converter

• FFmpeg (free, Windows, Mac and Linux): ffmpeg -i input.mov -c:v libx264 -crf 20 -c:a aac -movflags +faststart output.mp4. If the MOV is already H.264, ffmpeg -i input.mov -c copy output.mp4 changes the container without re-encoding. This also handles ProRes.
• HandBrake (free, Windows, Mac and Linux): open the MOV and choose a preset from the General category, which writes MP4 with H.264 video.

Have a WebM instead? The WebM to MP4 converter handles those. iPhone photos rather than videos? The HEIF to JPG converter turns HEIC photos into JPGs.