 MPEG-4 Part 14 extends over ISO Base Media File Format (MPEG-4 Part 12).[1] | |
| Filename extension |
.mp4, .m4a, .m4p, .m4b, .m4r and .m4v[Note 1] |
|---|---|
| Internet media type |
video/mp4 audio/mp4 |
| Type code | mpg4 |
| Developed by | International Organization for Standardization International Electrotechnical Commission |
| Initial release | October 2001 |
| Latest release | ISO/IEC 14496-14:2020 January 2020 |
| Type of format | Container format |
| Container for | Audio, video and text |
| Extended from | QuickTime File Format and MPEG-4 Part 12 |
| Standard | ISO/IEC 14496-14 |
| Open format? | No[2][3] |
| Free format? | No[2] |
MPEG-4 Part 14, or MP4, is a digital multimedia container format most commonly used to store video and audio, but it can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet. The only filename extension for MPEG-4 Part 14 files as defined by the specification is .mp4. MPEG-4 Part 14 (formally ISO/IEC 14496-14:2003) is a standard specified as a part of MPEG-4.
Portable media players are sometimes advertised as "MP4 players", although some are simply MP3 players that also play AMV video or some other video format and do not necessarily play the MPEG-4 Part 14 format.
- ^ Cite error: The named reference
3gpp2-vs-3gppwas invoked but never defined (see the help page). - ^ a b MPEG-4 File Format, Version 2 (Full draft). Sustainability of Digital Formats. Washington, D.C.: Library of Congress. 25 April 2023. Retrieved 23 February 2024.
- ^ Information technology – Coding of audio-visual objects – Part 14: MP4 file format (Standard) (3rd ed.). ISO. January 2020. ISO/IEC 14496-14:2020.