QuickTime File Format
| Filename extension |
.mov, .qt |
|---|---|
| Internet media type | |
| Type code | MooV |
| Uniform Type Identifier (UTI) | com.apple.quicktime-movie |
| Developed by | Apple Inc. |
| Type of format | Media container |
| Container for | Audio, video, text |
| Extended to | MPEG-4 Part 12 |
| Free format? | No[3] |
QuickTime File Format (QTFF) is a computer file format used natively by the QuickTime framework.[4][5][6]
Design
poo
Relation to MP4
Because both the QuickTime and MP4 container formats can use the same MPEG-4 formats, they are mostly interchangeable in a QuickTime-only environment. MP4, being an international standard, has more support. This is especially true on hardware devices, such as the PlayStation Portable and various DVD players; on the software side, most DirectShow and Video for Windows codec packs[7][8] include an MP4 parser, but not one for QTFF.
In QuickTime Pro's MPEG-4 Export dialog, an option called "Passthrough" allows a clean export to MP4 without affecting the audio or video streams. One discrepancy ushered in by QuickTime 7 released on April 29 2005, is that the QuickTime file format supports multichannel audio (used, for example, in the high-definition trailers on Apple's site[9]).
Extensions
The International Organization for Standardization approved the QuickTime file format as the basis of the MPEG-4 file format. The MPEG-4 file format specification was created on the basis of the QuickTime format specification published in 2001.[10] The MP4 (.mp4) file format was published in 2001 as the revision of the MPEG-4 Part 1: Systems specification published in 1999 (ISO/IEC 14496-1:2001).[11][12][13] In 2003, the first version of MP4 format was revised and replaced by MPEG-4 Part 14: MP4 file format (ISO/IEC 14496-14:2003).[14] The MP4 file format was generalized into the ISO Base Media File Format ISO/IEC 14496-12:2004, which defines a general structure for time-based media files. It in turn is used as the basis for other multimedia file formats (for example 3GP, Motion JPEG 2000).[15][16][17][18][19] A list of all registered extensions for ISO Base Media File Format is published on the official registration authority website www.mp4ra.org. This registration authority for code-points in "MP4 Family" files is Apple Inc. and it is named in Annex D (informative) in MPEG-4 Part 12.[18]
See also
References
- ^ "Video Media Types". IANA. 1993-06-04. Retrieved 2010-07-20.
- ^ "The Codecs Parameter for "Bucket" Media Types". IETF. November 2005. Retrieved 2010-07-20.
- ^ "QuickTime - Licensing and Trademarks - Apple Developers".
- ^ Apple Inc. "QuickTime File Format Specification: Introduction to QuickTime File Format Specification". Retrieved 2018-10-09.
- ^ AfterDawn.com. "QuickTime - AfterDawn.com glossary". Retrieved 2010-07-20.
- ^ "QuickTime container". MultimediaWiki. Retrieved 2010-07-20.
- ^ DefilerPak – A lightweight codec pack for Windows PCs Archived August 15, 2015, at the Wayback Machine
- ^ K-LiteCodecPack.com: Download Codecs, Videos and MP3s
- ^ Apple – Movie Trailers Archived 2010-02-13 at the Wayback Machine
- ^ Apple Inc. (2001). "Classic Version of the QuickTime File Format Specification". Retrieved 2009-06-14.
- ^ Library of Congress (2001). "MPEG-4 File Format, Version 1". Retrieved 2009-06-14.
- ^ Network Working Group (2006). "RFC 4337 – MIME Type Registration for MPEG-4". Retrieved 2009-06-14.
- ^ International Organization for Standardization (2001). "MPEG-4 Part 1: Systems; ISO/IEC 14496-1:2001". Retrieved 2009-06-11.
- ^ International Organization for Standardization (2003). "MPEG-4 Part 14: MP4 file format; ISO/IEC 14496-14:2003". Retrieved 2009-06-11.
- ^ mp4ra.org – MP4 Registration authority. "References, MPEG-4 Registration authority". Retrieved 2009-06-14.
{{cite web}}: CS1 maint: numeric names: authors list (link) - ^ ISO (April 2006). "ISO Base Media File Format white paper – Proposal". archive.org. Archived from the original on 2008-07-14. Retrieved 2009-12-26.
{{cite journal}}: Cite journal requires|journal=(help) - ^ ISO (October 2009). "ISO Base Media File Format white paper – Proposal". chiariglione.org. Retrieved 2009-12-26.
{{cite journal}}: Cite journal requires|journal=(help) - ^ a b ISO (2008). "ISO/IEC 14496-12:2008, Information technology – Coding of audio-visual objects – Part 12: ISO base media file format" (PDF). International Organization for Standardization: 88, 94. Retrieved 2009-05-30.
{{cite journal}}: Cite journal requires|journal=(help) - ^ International Organization for Standardization (2004). "MPEG-4 Part 12: ISO base media file format; ISO/IEC 14496-12:2004". Retrieved 2009-06-11.