CConvertora

MOV to MP4

Convert QuickTime MOV video to widely supported MP4.

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MOV → MP4FREE UNLIMITED · up to 100 MB per file

About mov to mp4

Convert a QuickTime .mov — the format iPhones, Macs and many cameras produce — into an .mp4 that plays almost anywhere, including Windows, Android and web pages. This is a container rewrite, not a re-encode: when the video is H.264 or HEVC, as it nearly always is, the picture is copied across bit-for-bit, so there is no quality loss and no long wait. Audio is copied when it is already AAC and re-encoded to AAC otherwise, and the MP4 is written for fast start so it begins playing before it has fully downloaded. A MOV using an editing codec such as ProRes cannot be copied into an MP4, and we tell you that plainly instead of producing something broken. The conversion runs in your browser — the video is never uploaded.

How it works

  1. 1Choose a .mov file, up to 100 MB.
  2. 2The video engine downloads once into your browser, then stays cached.
  3. 3The video track is copied into an MP4 container without re-encoding; audio becomes AAC.
  4. 4The result is checked as a real MP4, then offered for download.

Frequently asked questions

Is my video uploaded to a server?
No. Conversion runs inside your browser using a WebAssembly video engine. The only network requests are for the engine itself, served by Convertora and cached afterwards. Your video stays on your device.
Does the quality change?
The picture is copied exactly — no re-encoding, so no visible loss at all. Only audio may be re-encoded, and only when it is not already AAC.
Why did my MOV get refused?
Most likely it uses a codec such as ProRes or an animation codec that cannot go into an MP4 without a full re-encode, which is too slow to do properly in a browser. Export the clip as H.264 from your editor and convert that.
Why is the first conversion slower to start?
The video engine is around 31 MB and downloads the first time you use this tool. Your browser caches it, so later conversions start straight away. Nothing downloads until you actually convert.
Does it work on an iPhone or iPad?
Yes, in Safari on a reasonably recent device. Video work is memory-hungry on phones, which is why files are limited to 100 MB — a very large clip is better converted on a computer.
Is the file size the same?
Close to it. Because the video is copied rather than re-compressed, the MP4 is usually within a few percent of the original.

Related tools

This tool runs entirely in your browser — your file is never uploaded, and the result is discarded when you clear it or close the tab. Read more about privacy and security.