MP4 Converter
Convert files to and from MP4 — free, online, no signup.
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MP4 (MPEG-4 Part 14) is a multimedia container standardized in 2001 that bundles video, audio, and subtitles in one file. Usually carrying H.264 video with AAC audio, it is the most compatible video format in existence — every phone, browser, TV, and editor plays MP4.
| Full name | MPEG-4 Part 14 |
| Developer | MPEG (ISO/IEC) |
| Released | 2001 |
| Type | Media container |
| Typical use | universal video playback and sharing |
| MIME | video/mp4 |
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Frequently asked questions
How do I open a MP4 file?
MP4 (MPEG-4 Part 14) is a multimedia container standardized in 2001 that bundles video, audio, and subtitles in one file. Usually carrying H.264 video with AAC audio, it is the most compatible video format in existence — every phone, browser, TV, and editor plays MP4. If a device refuses to open it, the fastest fix is converting it to a more universal format with the converter above.
Is converting MP4 files free?
Yes — 10 conversions a day with files up to 200 MB, free, with no signup and no watermarks.
What codec does the converted MP4 use?
Filevo encodes MP4 with H.264 video and AAC audio with the faststart flag — the most compatible combination, optimized to start playing instantly when streamed.