QuickTime File Format
This is currently being merged. After Help:Merging and the resolution on the discussion . Process started in February 2024. |
Filename extension |
.mov, .movie, .qt | |
---|---|---|
Internet media type |
video/quicktime Container for Audio, video, text | |
Extended to | MPEG-4 Part 12 | |
Open format? | Yes | |
Free format? | No[5] |
QuickTime File Format (QTFF) is a computer file format used natively by the QuickTime framework.[6][7][8]
Design
The format specifies a
The ability to contain abstract data references for the media data, and the separation of the media data from the media offsets and the track edit lists means that QuickTime is particularly suited for editing, as it is capable of importing and editing in place (without data copying). Other later-developed media container formats such as Microsoft's Advanced Systems Format or the Matroska and Ogg containers lack this abstraction, and require all media data to be rewritten after editing.
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[10][11] 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[12]).
Extensions
The
See also
References
- ^ "Video Media Types". IANA. June 4, 1993. Retrieved July 20, 2010.
- doi:10.17487/RFC4281. Retrieved July 20, 2010.
- ^ "QuickTime File Format" (PDF). Apple Developer. Apple. March 1, 2001. Archived (PDF) from the original on October 6, 2021. Retrieved December 13, 2021.
- ^ "QuickTime File Format Specification - Document Revision History". Apple Developer. September 13, 2016. Retrieved December 13, 2021.
- ^ QuickTime File Format (Full draft). Sustainability of Digital Formats. Washington, D.C.: Library of Congress. February 14, 2013. Retrieved December 13, 2019.
- ^ Apple Inc. "QuickTime File Format Specification: Introduction to QuickTime File Format Specification". Retrieved October 9, 2018.
- ^ AfterDawn.com. "QuickTime - AfterDawn.com glossary". Retrieved July 20, 2010.
- ^ "QuickTime container". MultimediaWiki. Retrieved July 20, 2010.
- ^ Apple Inc. "QuickTime File Format Specification: Movie Atoms". Retrieved October 9, 2018.
- ^ DefilerPak – A lightweight codec pack for Windows PCs Archived August 15, 2015, at the Wayback Machine
- ^ K-LiteCodecPack.com: Download Codecs, Videos and MP3s
- ^ "iTunes Movie Trailers". trailers.apple.com. Archived from the original on February 13, 2010.
- ^ Apple Inc. (2001). "Classic Version of the QuickTime File Format Specification". Retrieved June 14, 2009.
- ^ Library of Congress (2001). "MPEG-4 File Format, Version 1". Retrieved June 14, 2009.
- doi:10.17487/RFC4337. Retrieved June 14, 2009.
- ^ International Organization for Standardization (2001). "MPEG-4 Part 1: Systems; ISO/IEC 14496-1:2001". Retrieved June 11, 2009.
- ^ International Organization for Standardization (2003). "MPEG-4 Part 14: MP4 file format; ISO/IEC 14496-14:2003". Retrieved June 11, 2009.
- ^ mp4ra.org – MP4 Registration authority. "References, MPEG-4 Registration authority". Retrieved June 14, 2009.
{{cite web}}
: CS1 maint: numeric names: authors list (link) - ^ ISO (April 2006). "ISO Base Media File Format white paper – Proposal". Archived from the original on July 14, 2008. Retrieved December 26, 2009.
- ^ ISO (October 2009). "ISO Base Media File Format white paper – Proposal". chiariglione.org. Retrieved December 26, 2009.
- ^ 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. pp. 88, 94. Retrieved May 30, 2009.
- ^ International Organization for Standardization (2004). "MPEG-4 Part 12: ISO base media file format; ISO/IEC 14496-12:2004". Retrieved June 11, 2009.