About this tool
iPhone videos and Mac screen recordings come out as MOV. Most of the time the video inside is already H.264 or HEVC, so this tool simply swaps the container to MP4 in a few seconds without re-encoding, with no quality loss. If the codec is not MP4-compatible, it re-encodes to H.264 automatically.
About the formats: MOV is Apple's QuickTime container and the default for iPhone videos and Mac screen recordings. Internally it is very similar to MP4, but many Windows programs and web upload forms refuse it. MP4 is the universal video container, usually holding H.264 video and AAC audio. It plays on every phone, browser, TV, and editing program, which is why most platforms ask for it.
MOV and MP4, side by side
| .mov in | .mp4 out | |
|---|---|---|
| Usual codecs | H.264 or HEVC, AAC | H.264 video, AAC audio |
| Plays on | Apple; Windows and web sometimes | Everything |
| Subtitles | Limited | Limited |
| Best for | Editing on a Mac | Sharing and uploading |
Rows where the two differ are marked. The full story on each: MOV files and MP4 files.
How to use it
- Drop your MOV files into the box above, or click to browse. Nothing is uploaded.
- Adjust the options if you want; the defaults suit most files.
- Click Convert to MP4 and wait a moment.
- Download the results individually or all at once as a ZIP.
Questions
Does MOV to MP4 lose quality?
No, when the stream can be copied (the common case). Only a forced re-encode recompresses the video, and even then at a high quality setting.
My iPhone video is HEVC. Will the MP4 play on Windows?
HEVC in MP4 plays on Windows 11, Macs, and phones. If a specific device refuses it, tick "Always re-encode to H.264".
Why does re-encoding take so long?
Encoding video in the browser runs on a single CPU core, so a re-encode processes roughly real time or slower for 1080p footage. Container swaps (stream copy) are near instant. Keep clips short or lower the resolution when you need speed.
Is it free, are files uploaded, which browsers work: the general questions are answered once for the whole site.