MP4MPEG-4 Part 14
The most compatible video format, played by almost every phone, computer, TV and social network.
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Video converter
Convert your videos to MP4, WebM, MOV or MKV, extract the sound as MP3 or WAV, or make an animated GIF. Conversion uses your device’s own power: the video is never uploaded.
- Files never uploaded
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MP40000002066747970
MP34944330400000000
The first bytes of a file often reveal its real format.
or drop them here. You can also paste an image (Ctrl+V).
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Files
These sample files are generated on the page. Convert them to try it out, or add your own.
Most used conversions
Supported formats
WEBMWebM
An open video format designed by Google for the web (VP8, VP9 or AV1). It is light, but some apps, TVs and phones cannot play it.
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MOVQuickTime Movie
Apple’s video format (QuickTime), used by the iPhone and many cameras. Windows, Android and some websites handle it less well than MP4.
Convert to
MKVMatroska Video
A very flexible video container that can hold several audio tracks and subtitles. Common for films, but some TVs and phones do not recognise it.
Convert to
M4VMPEG-4 Video (Apple)
A variant of MP4 created by Apple for iTunes and its devices.
Convert to
Frequently asked questions
Are video conversions really free?
Yes: no sign-up, no watermark and no limit on the number of files. The work happens on your device, so it costs us nothing in servers.
Are my files sent anywhere?
No. They are read and converted right in your browser. You can even go offline once the page has loaded: conversions you have used since the site’s last update keep working.
Is there a size limit?
A file’s size has no fixed limit: it depends on your device’s memory and on the browser. A few hundred MB work well on a recent computer. On a phone, stick to lighter files, especially for video. Most conversions read the whole file: beyond a certain size, often about 2 GB (less on a phone), the browser cannot read it in one block, and a message gives the file’s size.
A few caps still protect the browser’s memory, including: 1 GB of unpacked data for an archive or a Word, Excel, OpenDocument or EPUB file (512 MB on a phone and on some devices with little memory), 20,000 files per archive, 5 million filled cells per workbook, and 500 pages for a TIFF converted to PDF. A file over a cap is not converted, and a message says so.
Which browsers work?
The page is designed for recent versions of Chrome, Edge, Firefox and Safari. Video conversion (MP4, WEBM, MOV, MKV) uses WebCodecs, a feature of Chrome and Edge and of recent versions of Safari and Firefox (except Firefox for Android, which does not have it yet). A conversion the browser cannot do is refused with a message that says so.