ISO Base Media File Format - Revision history

It's moon: Per request on IRC #justsolve by ScenarioPlanet (~ScenarioP@hackint/user/ScenarioPlanet)

2025-05-23T03:57:19Z

Per request on IRC #justsolve by ScenarioPlanet (~ScenarioP@hackint/user/ScenarioPlanet)

Thorsted: /* Specifications */

2023-07-17T20:58:23Z

‎Specifications

Jsummers at 15:02, 3 November 2019

2019-11-03T15:02:46Z

Jsummers at 14:18, 16 April 2018

2018-04-16T14:18:02Z

Jsummers: /* Identification */

2018-04-11T15:25:53Z

‎Identification

Jsummers at 13:37, 11 April 2018

2018-04-11T13:37:19Z

Jsummers: Category:MPEG

2017-06-07T15:07:37Z

Category:MPEG

Espes at 04:25, 11 November 2014

2014-11-11T04:25:55Z

Espes at 04:19, 11 November 2014

2014-11-11T04:19:52Z

Jsummers: Add categories

2014-04-13T16:05:25Z

Add categories

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 |subcat=Metaformats
 |locfdd={{LoCFDD|fdd000079}}
 }}
 '''ISO Base Media File Format''' (sometimes abbreviated '''BMFF''' or '''ISO BMFF''') is a metaformat for "time-based" media formats (mainly audio and video). It is based on the more-general metaformat we're calling [[boxes/atoms format]].

@@ Line 25: / Line 25: @@
 == Specifications ==
 * [http://standards.iso.org/ittf/PubliclyAvailableStandards/index.html ISO Publicly Available Standards] ...
 ** [http://standards.iso.org/ittf/PubliclyAvailableStandards/c068960_ISO_IEC_14496-12_2015.zip 14496-12]
 ** [http://standards.iso.org/ittf/PubliclyAvailableStandards/c068963_ISO_IEC_15444-12_2015.zip 15444-12]

@@ Line 27: / Line 27: @@
 ** [http://standards.iso.org/ittf/PubliclyAvailableStandards/c068960_ISO_IEC_14496-12_2015.zip 14496-12]
 ** [http://standards.iso.org/ittf/PubliclyAvailableStandards/c068963_ISO_IEC_15444-12_2015.zip 15444-12]
 == Links ==

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 |locfdd={{LoCFDD|fdd000079}}
 }}
-'''ISO Base Media File Format''' (occasionally abbreviated ''BMFF'') is a metaformat for "time-based" media formats (mainly audio and video). It is based on the more-general metaformat we're calling [[boxes/atoms format]].
+'''ISO Base Media File Format''' (sometimes abbreviated '''BMFF''' or '''ISO BMFF''') is a metaformat for "time-based" media formats (mainly audio and video). It is based on the more-general metaformat we're calling [[boxes/atoms format]].
 It is defined by Part 12 of the [[MPEG-4]] standard, and also by Part 12 of the [[JPEG 2000]] standard.
-Files always have an "<code>ftyp</code>" box, which contains a list of "brands" that give information about the specific file format.  See the [[Boxes/atoms format#Brands|boxes/atoms]] article for more about brands.
+Files (almost) always have an "<code>ftyp</code>" box, containing a list of "brands" that give information about the specific file format. See the [[Boxes/atoms format#Brands|boxes/atoms]] article for more about brands.
 Much of the format was copied from [[QuickTime]] format.
-Among the formats based on it are [[MJ2]] and [[MP4]].
+Among the formats based on it are [[MP4]] and [[MJ2]].
 == Identification ==
-Files use [[boxes/atoms format]], and almost always have both an "<code>ftyp</code>" box and an "<code>moov</code>" box. However, for compatibility with certain older files, the "<code>ftyp</code>" box can sometimes be omitted if the brand would be "<code>mp41</code>".
+There appears to be no simple way to distinguish BMFF from other formats.
 == Specifications ==

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 == Identification ==
-Files use [[boxes/atoms format]], and almost always have both an "<code>ftyp</code>" box and an "<code>moov</code>" box. However, for compatibility with certain older files, the "<code>ftyp</code>" can sometimes be omitted.
+Files use [[boxes/atoms format]], and almost always have both an "<code>ftyp</code>" box and an "<code>moov</code>" box. However, for compatibility with certain older files, the "<code>ftyp</code>" box can sometimes be omitted if the brand would be "<code>mp41</code>".
 == Specifications ==

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 * [[Wikipedia:ISO base media file format|Wikipedia article]]
 [[Category:MPEG-4]]
 [[Category:JPEG 2000]]
 [[Category:Video]]
 [[Category:Audio and Music]]

← Older revision		Revision as of 16:05, 13 April 2014
Line 26:		Line 26:
	[[Category:MPEG-4]]		[[Category:MPEG-4]]
	[[Category:JPEG 2000]]		[[Category:JPEG 2000]]
		+	[[Category:Video]]
		+	[[Category:Audio and Music]]