MP4
From Just Solve the File Format Problem
(Difference between revisions)
(Wikidata) |
(→Specifications) |
||
| Line 23: | Line 23: | ||
== Specifications == | == Specifications == | ||
* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=38538 ISO/IEC 14496-14:2003 (MP4 file format)] (not free to download) | * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=38538 ISO/IEC 14496-14:2003 (MP4 file format)] (not free to download) | ||
| + | * [https://web.archive.org/web/20220208140702/https://b.goeswhere.com/ISO_IEC_14496-12_2015.pdf ISO/IEC 14496-12:2015 (archived)] | ||
== Sample files == | == Sample files == | ||
Revision as of 20:28, 17 July 2023
MP4 usually refers to the multimedia file format defined in Part 14 (and to a lesser extent Part 1) of the MPEG-4 standard.
"MP4" could also mean the entire MPEG-4 standard, or some other subset of MPEG-4. This article only covers the Part 14 file format.
MPEG-4 Part 14 is an application of Part 12. The recommended extension for it is ".mp4", though ".m4a" is often used for audio-only files. It is standardized by ISO/IEC 14496-14.
Imgur uses an MP4 video format for converting animated GIFs uploaded by users into its own "GIFV" format, which is actually an MPR referenced in a video element of an HTML 5 document, which is served with a .gifv extension from their servers.
Contents |
See also
- AVC (file format), for the related format defined in MPEG-4 Part 15
- ISO Base Media File Format
- AAC
Specifications
- ISO/IEC 14496-14:2003 (MP4 file format) (not free to download)
- ISO/IEC 14496-12:2015 (archived)
