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MP4 (MPEG-4 Part 14)
Filename extension .mp4
Internet media type video/mp4, audio/mp4, application/mp4
Type code mpg4
Developed by ISO
Type of format Media container
Container for Audio, video, text
Extended from QuickTime .mov and MPEG-4 Part 12
Standard(s) ISO/IEC 14496-14
.MPEG-4 Part 14 or MP4 file format, formally ISO/IEC 14496-14:2003, is a multimedia container format standard specified as a part of MPEG-4.^ ISO/IEC 14496-12:2004 Part 12: ISO Base File Format.
  • 3000 3GP/MP4/MOV File Format 22 January 2010 15:54 UTC www.on2.com [Source type: Reference]

^ History MPEG-4 Part 14 was based on Apple's QuickTime container format.
  • Tiki Bar TV Forum / Episode 14 - Boomerang 22 January 2010 15:54 UTC www.tikibartv.com [Source type: FILTERED WITH BAYES]

^ NEN-ISO/IEC 14496-14:2003/C1:2006 en Information technology - Coding of audio-visual objects - Part 14: MP4 file format .
  • Tekensets en codering van informatie | Informatietechnologie (it) | NEN.nl 22 January 2010 15:54 UTC normen.nen.nl [Source type: Reference]

.It is most commonly used to store digital video and digital audio streams, especially those defined by MPEG, but can also be used to store other data such as subtitles and still images.^ An mp4 file can also be used to store subtitles, still images and other data.

^ It is an audio and video format developed by Apple, commonly used for storing digital media types, such as audio and video.

^ It's commonly used to store video and data.

.Like most modern container formats, MPEG-4 Part 14 allows streaming over the Internet.^ Mpeg-4 Part 14, a multimedia container format commonly known as Mpeg-4.
  • Important Facts About Mp3 And Mp4 Players 22 January 2010 15:54 UTC articlevalhalla.net [Source type: General]

^ MP4 is a multimedia container format standard specified as a part of MPEG-4.
  • RZ MP4 Converter, Convert all popular video files to MP4(Mpeg-4/AVC/H.264) video and M4A audio files. 22 January 2010 15:54 UTC www.rzvideoconverter.com [Source type: FILTERED WITH BAYES]
  • MP4 to MP3 Converter, Extract Audio from MP4/M4V(MPEG-4 Video) Video to MP3(MPEG Layer-3) with AimOne Audio Converter, MP42MP3 converter, conversion. 22 January 2010 15:54 UTC www.aimonesoft.com [Source type: General]
  • iPhone Video Converter - Convert AVI MP4 WMV MOV RMVB FLV video formats to iPhone 22 January 2010 15:54 UTC www.kigo-video-converter.com [Source type: FILTERED WITH BAYES]

^ MPEG-4 is a multimedia container format standard specified as a part of MPEG-4.
  • How to convert MP4 to AVI movie, AVI Converter, MP4 Converter, MP4 to AVI, MP4 to FLV, MPEG4 Video to AVI 22 January 2010 15:54 UTC www.movkit.com [Source type: FILTERED WITH BAYES]

.A separate hint track is used to include streaming information in the file.^ A separate hint track is used to include streaming information in the file.
  • Easy-to-use MP4 to 3GP Converter to Convert MP4 to 3GP Format 22 January 2010 15:54 UTC www.winxdvd.com [Source type: FILTERED WITH BAYES]
  • MP4 to PSP Video Converter 22 January 2010 15:54 UTC www.any-video-converter.com [Source type: FILTERED WITH BAYES]
  • How to convert MP4 to DPG 22 January 2010 15:54 UTC www.topvideoconverter.com [Source type: FILTERED WITH BAYES]
  • How to convert M4V to MP4 22 January 2010 15:54 UTC www.topvideoconverter.com [Source type: FILTERED WITH BAYES]
  • Convert MP4 files to MPEG4 AVC, MP4 files to MPEG4 AVC conversion 22 January 2010 15:54 UTC www.convertvideofiles.net [Source type: FILTERED WITH BAYES]
  • MP4 to PSP Video Converter 22 January 2010 15:54 UTC order.any-video-converter.com [Source type: FILTERED WITH BAYES]

^ MP4 files with audio streams encrypted by FairPlay Digital Rights Management as sold through the iTunes Music Store use the .m4p extension.
  • what is the difference between MPEG4 video and MP4 video? - Digital Video Forums 22 January 2010 15:54 UTC forum.digital-digest.com [Source type: FILTERED WITH BAYES]

^ MPEG-4 files with audio streams encrypted by FairPlay Digital Rights Management as sold through the iTunes Store use the .m4p extension.
  • RZ MP4 Converter, Convert all popular video files to MP4(Mpeg-4/AVC/H.264) video and M4A audio files. 22 January 2010 15:54 UTC www.rzvideoconverter.com [Source type: FILTERED WITH BAYES]
  • File Extension M4A 22 January 2010 15:54 UTC www.fileextensionguru.com [Source type: Reference]
  • RealZeal Soft Inc. Knowledge Base - Popular Videos 22 January 2010 15:54 UTC www.rzfun.com [Source type: FILTERED WITH BAYES]
  • MPEG-4 video - Mobile terms glossary - GSMArena.com 22 January 2010 15:54 UTC www.gsmarena.com [Source type: General]

.The official filename extension for MPEG-4 Part 14 files is .mp4, thus the container format is often referred to simply as MP4.^ MPEG-4 Part 14 Multimedia Container .
  • File extensions that can be opened by VLC media player 0.9 22 January 2010 15:54 UTC www.openwith.org [Source type: FILTERED WITH BAYES]

^ History MPEG-4 Part 14 was based on Apple's QuickTime container format.
  • Tiki Bar TV Forum / Episode 14 - Boomerang 22 January 2010 15:54 UTC www.tikibartv.com [Source type: FILTERED WITH BAYES]

^ Mpeg-4 Part 14, a multimedia container format commonly known as Mpeg-4.
  • Important Facts About Mp3 And Mp4 Players 22 January 2010 15:54 UTC articlevalhalla.net [Source type: General]

.Some devices advertised as "MP4 players" are simply MP3 players that also play AMV video or some other video format, and do not play the MPEG-4 part 14 format.^ MPEG-4 Part 14 Multimedia Container .
  • Browse file extensions starting with M 22 January 2010 15:54 UTC www.openwith.org [Source type: FILTERED WITH BAYES]
  • File extensions that can be opened by VLC media player 0.9 22 January 2010 15:54 UTC www.openwith.org [Source type: FILTERED WITH BAYES]

^ Mpeg-4 Part 14, a multimedia container format commonly known as Mpeg-4.
  • Important Facts About Mp3 And Mp4 Players 22 January 2010 15:54 UTC articlevalhalla.net [Source type: General]

^ Note that many devices advertised as "MP4 players" are simply AMV video capable MP3 players, and do not play MPEG-4 part 14 or any other MPEG-4 format.

Contents

History of MP4

.
MPEG-4 Part 14 extension over ISO Base Media File Format (MPEG-4 Part 12).
^ ISO/IEC 14496-12:2004 Part 12: ISO Base File Format.
  • 3000 3GP/MP4/MOV File Format 22 January 2010 15:54 UTC www.on2.com [Source type: Reference]

^ MPEG-4 Part 14 Multimedia Container .
  • Browse file extensions starting with M 22 January 2010 15:54 UTC www.openwith.org [Source type: FILTERED WITH BAYES]

^ G mobile phones use 3GP, a simplified version of MPEG-4 Part 12 (a.k.a MPEG-4/JPEG2000 ISO Base Media file format, MPEG-4 Part 14 is a derivated standard from ISO Base file format too), with the .3gp and .3g2 extensions.
  • what is the difference between MPEG4 video and MP4 video? - Digital Video Forums 22 January 2010 15:54 UTC forum.digital-digest.com [Source type: FILTERED WITH BAYES]

[1]
.MPEG-4 Part 14 is based upon ISO/IEC 14496-12:2004 (MPEG-4 Part 12: ISO base media file format) which is directly based upon Apple’s QuickTime container format.^ ISO/IEC 14496-12:2004 Part 12: ISO Base File Format.
  • 3000 3GP/MP4/MOV File Format 22 January 2010 15:54 UTC www.on2.com [Source type: Reference]

^ NEN-ISO/IEC 14496-12:2008/C1:2009 Information technology - Coding of audio-visual objects - Part 12: ISO base media file format .
  • Tekensets en codering van informatie | Informatietechnologie (it) | NEN.nl 22 January 2010 15:54 UTC normen.nen.nl [Source type: Reference]

^ MPEG-4 Part 14 Multimedia Container .
  • Browse file extensions starting with M 22 January 2010 15:54 UTC www.openwith.org [Source type: FILTERED WITH BAYES]

[2][3][4][5][6] .MPEG-4 Part 14 is essentially identical to the MOV format, but formally specifies support for Initial Object Descriptors (IOD) and other MPEG features.^ Mpeg-4 Part 14, a multimedia container format commonly known as Mpeg-4.
  • Important Facts About Mp3 And Mp4 Players 22 January 2010 15:54 UTC articlevalhalla.net [Source type: General]

^ MPEG-4 Part 2 video is not supported.
  • Online Glossary of FLV Video Terms 22 January 2010 15:54 UTC etinysoft.com [Source type: FILTERED WITH BAYES]

^ MP4 is a multimedia container format standard specified as a part of MPEG-4.
  • RZ MP4 Converter, Convert all popular video files to MP4(Mpeg-4/AVC/H.264) video and M4A audio files. 22 January 2010 15:54 UTC www.rzvideoconverter.com [Source type: FILTERED WITH BAYES]
  • iPhone Video Converter - Convert AVI MP4 WMV MOV RMVB FLV video formats to iPhone 22 January 2010 15:54 UTC www.kigo-video-converter.com [Source type: FILTERED WITH BAYES]

[7] .MPEG-4 Part 14 revises and completely replaces Clause 13 of ISO/IEC 14496-1 (MPEG-4 Part 1: Systems), in which the file format for MPEG-4 content was previously specified.^ ISO/IEC 14496-12:2004 Part 12: ISO Base File Format.
  • 3000 3GP/MP4/MOV File Format 22 January 2010 15:54 UTC www.on2.com [Source type: Reference]

^ MPEG-4 Part 14 Multimedia Container .
  • Browse file extensions starting with M 22 January 2010 15:54 UTC www.openwith.org [Source type: FILTERED WITH BAYES]

^ Mpeg-4 Part 14, a multimedia container format commonly known as Mpeg-4.
  • Important Facts About Mp3 And Mp4 Players 22 January 2010 15:54 UTC articlevalhalla.net [Source type: General]

[8]
.The MPEG-4 file format specification was created on the basis of the QuickTime format specification published in 2001.[9] The MPEG-4 file format, version 1 was published in 2001 as ISO/IEC 14496-1:2001, which is a revision of the MPEG-4 Part 1: Systems specification published in 1999 (ISO/IEC 14496-1:1999).^ It was updated in MPEG-4 Part 3 (known formally as ISO/IEC 14496-3:1999) in 1999.
  • Convert Your iTunes Purchases to MP3s - PC World Forums 22 January 2010 15:54 UTC forums.pcworld.com [Source type: General]

^ ISO/IEC 21888:2001 .
  • Publicly Available Standards 22 January 2010 15:54 UTC standards.iso.org [Source type: Reference]

^ MPEG-4 Parts MPEG-4 a standard with many parts, such as a standard for the MPEG-4 file format.
  • MPEG-4 Overview | Mobile Muse 22 January 2010 15:54 UTC www.mobilemuse.ca [Source type: General]

[10][11][12] .In 2003, the first version of MP4 file format was revised and replaced by MPEG-4 Part 14: MP4 file format (ISO/IEC 14496-14:2003), commonly named as MPEG-4 file format version 2.[13] 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.^ NEN-ISO/IEC 14496-12:2008/C1:2009 Information technology - Coding of audio-visual objects - Part 12: ISO base media file format .
  • Tekensets en codering van informatie | Informatietechnologie (it) | NEN.nl 22 January 2010 15:54 UTC normen.nen.nl [Source type: Reference]

^ MPEG-4 Part 14 Multimedia Container .
  • Browse file extensions starting with M 22 January 2010 15:54 UTC www.openwith.org [Source type: FILTERED WITH BAYES]

^ History MPEG-4 Part 14 was based on Apple's QuickTime container format.
  • Tiki Bar TV Forum / Episode 14 - Boomerang 22 January 2010 15:54 UTC www.tikibartv.com [Source type: FILTERED WITH BAYES]

.It in turn is used as the basis for other file formats in the family (for example MP4, 3GP, Motion JPEG 2000).^ MP4 file format Options .
  • MP4 file format - alt.comp.freeware | Google Groups 22 January 2010 15:54 UTC groups.google.com [Source type: FILTERED WITH BAYES]

^ It in turn is used as the basis for other file formats in the family.
  • The 'MP4' Registration Authority 22 January 2010 15:54 UTC qtra.apple.com [Source type: Reference]

^ Easy-to-use MP4 to 3GP Converter to Convert MP4 to 3GP Format .
  • Easy-to-use MP4 to 3GP Converter to Convert MP4 to 3GP Format 22 January 2010 15:54 UTC www.winxdvd.com [Source type: FILTERED WITH BAYES]

[2][14][15]
MP4 file format versions
Version Release date Standard Description
MP4 file format version 1 2001 ISO/IEC 14496-1:2001 MPEG-4 Part 1 (Systems), Second edition
MP4 file format version 2 2003 ISO/IEC 14496-14:2003 MPEG-4 Part 14 (MP4 file format), First edition
.The MP4 file format defined some extensions over ISO Base Media File Format to support MPEG-4 visual/audio codecs and various MPEG-4 Systems features such as object descriptors and scene descriptions.^ MPEG-4 (ISO/IEC 14496) is a collection of standards defining the coding of audio-visual objects.
  • IP Video CCTV and H.264 - IndigoVision Complete IP Video Security Solutions - IP CCTV, IP Camera, IP Video, Network Video Recorder, Video Management Software 22 January 2010 15:54 UTC www.indigovision.com [Source type: FILTERED WITH BAYES]

^ MPEG-4 Parts MPEG-4 a standard with many parts, such as a standard for the MPEG-4 file format.
  • MPEG-4 Overview | Mobile Muse 22 January 2010 15:54 UTC www.mobilemuse.ca [Source type: General]

^ I understand it is MPEG-4 so its .mp4 file?
  • Releaselog | RLSLOG.net » Transformers HD DVD 1080p AVC/MPEG-4 DD-CtrlHD 22 January 2010 15:54 UTC www.rlslog.net [Source type: FILTERED WITH BAYES]

.Some of these extensions are also used by other formats based on ISO base media file format (e.g.^ Motion JPEG2000 (based on MPEG-4 part 12, the ISO Base Media File Format) .
  • State of the Art/Containers - Media Fragments Working Group Wiki 22 January 2010 15:54 UTC www.w3.org [Source type: Reference]

^ The format is a base format for media file formats.
  • State of the Art/Containers - Media Fragments Working Group Wiki 22 January 2010 15:54 UTC www.w3.org [Source type: Reference]

^ MP4 File Format (MPEG-4 part 14) (based on MPEG-4 part 12, the ISO Base Media File Format) .
  • State of the Art/Containers - Media Fragments Working Group Wiki 22 January 2010 15:54 UTC www.w3.org [Source type: Reference]

3GP).[1] .List of all registered extensions for ISO Base Media File Format is published on the official registration authority website www.mp4ra.org.^ Motion JPEG2000 (based on MPEG-4 part 12, the ISO Base Media File Format) .
  • State of the Art/Containers - Media Fragments Working Group Wiki 22 January 2010 15:54 UTC www.w3.org [Source type: Reference]

^ The format is a base format for media file formats.
  • State of the Art/Containers - Media Fragments Working Group Wiki 22 January 2010 15:54 UTC www.w3.org [Source type: Reference]

^ MP4 File Format (MPEG-4 part 14) (based on MPEG-4 part 12, the ISO Base Media File Format) .
  • State of the Art/Containers - Media Fragments Working Group Wiki 22 January 2010 15:54 UTC www.w3.org [Source type: Reference]

.The registration authority for code-points (identifier values) in "MP4 Family" files is Apple Computer Inc.^ QuickTime File format, Apple Computer Inc.
  • The 'MP4' Registration Authority 22 January 2010 15:54 UTC qtra.apple.com [Source type: Reference]

^ NEN-ISO/IEC 14496-14:2003 en Information technology - Coding of audio-visual objects - Part 14: MP4 file format .
  • Tekensets en codering van informatie | Informatietechnologie (it) | NEN.nl 22 January 2010 15:54 UTC normen.nen.nl [Source type: Reference]

^ Most of the specifications are related to the first MPEG-4 file format (MP4 version 1), which in turn was derived from the QuickTime file format defined by Apple Computer.
  • The 'MP4' Registration Authority 22 January 2010 15:54 UTC qtra.apple.com [Source type: Reference]

and it is named in .Annex D (informative) in MPEG-4 Part 12.[14] Codec designers should register the codes they invent, but the registration is not mandatory[16] and some of invented and used code-points are not registered.^ MPEG-4 Part 14 Multimedia Container .
  • File extensions that can be opened by VLC media player 0.9 22 January 2010 15:54 UTC www.openwith.org [Source type: FILTERED WITH BAYES]

^ MPEG-4) is specified in the file by the registered FourCC code of the codec.
  • Jumpy Jumpbacks w/ Mediashout 2.5: Part 2 22 January 2010 15:54 UTC www.digitaljuice.com [Source type: FILTERED WITH BAYES]

^ MP4 container - MPEG-4 Parts 12 & 14 / ISO 14496-12 & 14496-14.

[17] .When someone is creating a new specification derived from the ISO Base Media File Format, all the existing specifications should be used both as examples and a source of definitions and technology.^ Motion JPEG2000 (based on MPEG-4 part 12, the ISO Base Media File Format) .
  • State of the Art/Containers - Media Fragments Working Group Wiki 22 January 2010 15:54 UTC www.w3.org [Source type: Reference]

^ The format is a base format for media file formats.
  • State of the Art/Containers - Media Fragments Working Group Wiki 22 January 2010 15:54 UTC www.w3.org [Source type: Reference]

^ MP4 File Format (MPEG-4 part 14) (based on MPEG-4 part 12, the ISO Base Media File Format) .
  • State of the Art/Containers - Media Fragments Working Group Wiki 22 January 2010 15:54 UTC www.w3.org [Source type: Reference]

.If an existing specification already covers how a particular media type is stored in the file format (e.g.^ The format is a base format for media file formats.
  • State of the Art/Containers - Media Fragments Working Group Wiki 22 January 2010 15:54 UTC www.w3.org [Source type: Reference]

^ File type specification: .
  • File extension MP4 - MPEG-4 video file format 22 January 2010 15:54 UTC www.file-extensions.org [Source type: FILTERED WITH BAYES]

^ Zune software can import your existing files, including your music and video from iTunes and Windows Media .
  • Zune as Part of Microsoft’s “Broader Picture” 22 January 2010 15:54 UTC www.techcrunch.com [Source type: General]

.MPEG-4 audio or video in MP4), that definition should be used and a new one should not be invented.^ But the MP4 is also a audio format and a video format.
  • What is the difference between mp3 and mp4?? - Yahoo! Answers 22 January 2010 15:54 UTC answers.yahoo.com [Source type: General]

^ MPEG 4 should not be confused with MP4.

^ MP4 - MPEG-4 video file format .
  • File extension MP4 - MPEG-4 video file format 22 January 2010 15:54 UTC www.file-extensions.org [Source type: FILTERED WITH BAYES]

[14]

.MP4 versus .M4A file extensions

.The existence of two different file extensions for naming audio-only MP4 files has been a source of confusion among users and multimedia playback software.^ Step Two: Trim Audio files .
  • 3G2 to M4A Converter Guide: How to convert .3g2 to .m4a with 3G2 to M4A Converter? 22 January 2010 15:54 UTC www.iorgsoft.com [Source type: FILTERED WITH BAYES]

^ MP4 versus .M4A file extensions The existence of two different file extensions for naming audio-only MP4 files has been a source of confusion among users and multimedia playback software.

^ The existence of two different file extensions for naming audio-only MP4 files has been a source of confusion among users and multimedia playback software.
  • RZ MP4 Converter, Convert all popular video files to MP4(Mpeg-4/AVC/H.264) video and M4A audio files. 22 January 2010 15:54 UTC www.rzvideoconverter.com [Source type: FILTERED WITH BAYES]
  • 3G2 to M4A Converter Guide: How to convert .3g2 to .m4a with 3G2 to M4A Converter? 22 January 2010 15:54 UTC www.iorgsoft.com [Source type: FILTERED WITH BAYES]
  • RealZeal Soft Inc. Knowledge Base - Popular Videos 22 January 2010 15:54 UTC www.rzfun.com [Source type: FILTERED WITH BAYES]
  • File Extensions Collection 22 January 2010 15:54 UTC brocom.info [Source type: Reference]

.Since MPEG-4 Part 14 is a container format, MPEG-4 files may contain any number of audio, video, and even subtitle streams, making it impossible to determine the type of streams in an MPEG-4 file based on its filename extension alone.^ MPEG-4 Part 14 Multimedia Container .
  • Browse file extensions starting with M 22 January 2010 15:54 UTC www.openwith.org [Source type: FILTERED WITH BAYES]

^ History MPEG-4 Part 14 was based on Apple's QuickTime container format.
  • Tiki Bar TV Forum / Episode 14 - Boomerang 22 January 2010 15:54 UTC www.tikibartv.com [Source type: FILTERED WITH BAYES]

^ MPEG-4 Parts MPEG-4 a standard with many parts, such as a standard for the MPEG-4 file format.
  • MPEG-4 Overview | Mobile Muse 22 January 2010 15:54 UTC www.mobilemuse.ca [Source type: General]

.In response, Apple Inc.^ In response, Apple Inc.
  • RZ MP4 Converter, Convert all popular video files to MP4(Mpeg-4/AVC/H.264) video and M4A audio files. 22 January 2010 15:54 UTC www.rzvideoconverter.com [Source type: FILTERED WITH BAYES]
  • 3G2 to M4A Converter Guide: How to convert .3g2 to .m4a with 3G2 to M4A Converter? 22 January 2010 15:54 UTC www.iorgsoft.com [Source type: FILTERED WITH BAYES]
  • RealZeal Soft Inc. Knowledge Base - Popular Videos 22 January 2010 15:54 UTC www.rzfun.com [Source type: FILTERED WITH BAYES]
  • File Extensions Collection 22 January 2010 15:54 UTC brocom.info [Source type: Reference]

started using and popularizing the ..m4a file extension.^ File extensions While the only official file extension defined by the standard is .mp4, various file extensions are commonly used to indicate intended content: Audio-only MP4 files generally have a .m4a extension.
  • what is the difference between MPEG4 video and MP4 video? - Digital Video Forums 22 January 2010 15:54 UTC forum.digital-digest.com [Source type: FILTERED WITH BAYES]

^ For example, the .m4b extension is used for audio book and podcast files, while the .m4a is the audio-only representation of the mp4 file format.

^ An .m4a audio file cannot "bookmark" (remember the last listening spot), whereas .m4b extension files can.
  • RZ MP4 Converter, Convert all popular video files to MP4(Mpeg-4/AVC/H.264) video and M4A audio files. 22 January 2010 15:54 UTC www.rzvideoconverter.com [Source type: FILTERED WITH BAYES]
  • RealZeal Soft Inc. Knowledge Base - Popular Videos 22 January 2010 15:54 UTC www.rzfun.com [Source type: FILTERED WITH BAYES]

.Software capable of audio/video playback should recognize files with either .m4a or .mp4 file extensions, as would be expected, as there are no file format differences between the two.^ There are 4 different types of XMF files.
  • State of the Art/Containers - Media Fragments Working Group Wiki 22 January 2010 15:54 UTC www.w3.org [Source type: Reference]

^ MP4 files re compressed video files.
  • What is the difference between mp3 and mp4?? - Yahoo! Answers 22 January 2010 15:54 UTC answers.yahoo.com [Source type: General]

^ MP4 file format Options .
  • MP4 file format - alt.comp.freeware | Google Groups 22 January 2010 15:54 UTC groups.google.com [Source type: FILTERED WITH BAYES]

.Most software capable of creating MPEG-4 audio will allow the user to choose the filename extension of the created MPEG-4 files.^ The official filename extension for WMV files is .wmv.

^ Audio-only MPEG-4 files generally have .m4a extension.

^ Audio-only MPEG-4 files generally have a .m4a extension.
  • RZ MP4 Converter, Convert all popular video files to MP4(Mpeg-4/AVC/H.264) video and M4A audio files. 22 January 2010 15:54 UTC www.rzvideoconverter.com [Source type: FILTERED WITH BAYES]
  • RealZeal Soft Inc. Knowledge Base - Popular Videos 22 January 2010 15:54 UTC www.rzfun.com [Source type: FILTERED WITH BAYES]

While the only official file extension defined by the standard is .mp4, various file extensions are commonly used to indicate intended content:
.
  • MPEG-4 files with audio and video generally use the standard .mp4 extension.
  • Audio-only MPEG-4 files generally have a .m4a extension.^ RZ MP4 Converter - Converts all popular video to mp4(MPEG-4) files!
    • RZ MP4 Converter, Convert all popular video files to MP4(Mpeg-4/AVC/H.264) video and M4A audio files. 22 January 2010 15:54 UTC www.rzvideoconverter.com [Source type: FILTERED WITH BAYES]

    ^ File extensions While the only official file extension defined by the standard is .mp4, various file extensions are commonly used to indicate intended content: Audio-only MP4 files generally have a .m4a extension.
    • what is the difference between MPEG4 video and MP4 video? - Digital Video Forums 22 January 2010 15:54 UTC forum.digital-digest.com [Source type: FILTERED WITH BAYES]

    ^ I understand it is MPEG-4 so its .mp4 file?
    • Releaselog | RLSLOG.net » Transformers HD DVD 1080p AVC/MPEG-4 DD-CtrlHD 22 January 2010 15:54 UTC www.rlslog.net [Source type: FILTERED WITH BAYES]

    .This is especially true of non-protected content.^ This is especially true of non-protected content.
    • RZ MP4 Converter, Convert all popular video files to MP4(Mpeg-4/AVC/H.264) video and M4A audio files. 22 January 2010 15:54 UTC www.rzvideoconverter.com [Source type: FILTERED WITH BAYES]
    • RealZeal Soft Inc. Knowledge Base - Popular Videos 22 January 2010 15:54 UTC www.rzfun.com [Source type: FILTERED WITH BAYES]
    • MPEG-4 video - Mobile terms glossary - GSMArena.com 22 January 2010 15:54 UTC www.gsmarena.com [Source type: General]

    ^ This work will help preventing fragmentation in the market caused by multiple, non-interoperable ways of protecting content.
    • MPEG News 22 January 2010 15:54 UTC www.knk-mpeg.com [Source type: FILTERED WITH BAYES]

    .
    • MPEG-4 files with audio streams encrypted by FairPlay Digital Rights Management as sold through the iTunes Store use the .m4p extension.^ It will provide interoperable digital rights management in the broadcast space, where MPEG-2 is widely in use.
      • MPEG News 22 January 2010 15:54 UTC www.knk-mpeg.com [Source type: FILTERED WITH BAYES]

      ^ MPEG-4 files with audio streams encrypted by FairPlay Digital Rights Management as sold through the iTunes .

      ^ IPMP is MPEGs term for Digital Rights Management.
      • MPEG News 22 January 2010 15:54 UTC www.knk-mpeg.com [Source type: FILTERED WITH BAYES]

      .iTunes Plus tracks are unencrypted and use .m4a accordingly.
    • Audio book and podcast files, which also contain metadata including chapter markers, images, and hyperlinks, can use the extension .m4a, but more commonly use the .m4b extension.^ M4A, Audio file that uses MPEG-4 audio compression; uses the same compression as an .MP4 video file, but does not contain a video track.
      • 3G2 to M4A Converter Guide: How to convert .3g2 to .m4a with 3G2 to M4A Converter? 22 January 2010 15:54 UTC www.iorgsoft.com [Source type: FILTERED WITH BAYES]

      ^ Audio book and podcast files, which also contain metadata including chapter markers, images, and hyperlinks, can use the extension .m4a, but more commonly use the .m4b extension.
      • RZ MP4 Converter, Convert all popular video files to MP4(Mpeg-4/AVC/H.264) video and M4A audio files. 22 January 2010 15:54 UTC www.rzvideoconverter.com [Source type: FILTERED WITH BAYES]
      • what is the difference between MPEG4 video and MP4 video? - Digital Video Forums 22 January 2010 15:54 UTC forum.digital-digest.com [Source type: FILTERED WITH BAYES]
      • RealZeal Soft Inc. Knowledge Base - Popular Videos 22 January 2010 15:54 UTC www.rzfun.com [Source type: FILTERED WITH BAYES]
      • MPEG-4 video - Mobile terms glossary - GSMArena.com 22 January 2010 15:54 UTC www.gsmarena.com [Source type: General]
      • Digital Jargon 22 January 2010 15:54 UTC www.frogjuggler.com [Source type: Reference]

      ^ Audio-only MPEG-4 files generally have .m4a extension.

      .An .m4a audio file cannot "bookmark" (remember the last listening spot), whereas .m4b extension files can.
    • The Apple iPhone uses MPEG-4 audio for its ringtones but uses the .m4r extension rather than the .m4a extension.
  • Raw MPEG-4 Visual bitstreams are named .m4v but this extension is also sometimes used for video in MP4 container format.^ RZ MP4 Converter - Converts all popular video to mp4(MPEG-4) files!
    • RZ MP4 Converter, Convert all popular video files to MP4(Mpeg-4/AVC/H.264) video and M4A audio files. 22 January 2010 15:54 UTC www.rzvideoconverter.com [Source type: FILTERED WITH BAYES]

    ^ MP4 files re compressed video files.
    • What is the difference between mp3 and mp4?? - Yahoo! Answers 22 January 2010 15:54 UTC answers.yahoo.com [Source type: General]

    ^ From what I researched, .mp4 is the official file extension for MPEG-4 Part 14 files.
    • what is the difference between MPEG4 video and MP4 video? - Digital Video Forums 22 January 2010 15:54 UTC forum.digital-digest.com [Source type: FILTERED WITH BAYES]

    [18]
  • .
  • Mobile phones use 3GP, an implementation of MPEG-4 Part 12 (a.k.a MPEG-4/JPEG2000 ISO Base Media file format), similar to MP4. It uses .3gp and .3g2 extensions.^ G mobile phones use 3GP, a simplified version of MPEG-4 Part 12 (a.k.a MPEG-4/JPEG2000 ISO Base Media file format, MPEG-4 Part 14 is a derivated standard from ISO Base file format too), with the .3gp and .3g2 extensions.
    • what is the difference between MPEG4 video and MP4 video? - Digital Video Forums 22 January 2010 15:54 UTC forum.digital-digest.com [Source type: FILTERED WITH BAYES]

    ^ MPEG-4 Parts MPEG-4 a standard with many parts, such as a standard for the MPEG-4 file format.
    • MPEG-4 Overview | Mobile Muse 22 January 2010 15:54 UTC www.mobilemuse.ca [Source type: General]

    ^ I understand it is MPEG-4 so its .mp4 file?
    • Releaselog | RLSLOG.net » Transformers HD DVD 1080p AVC/MPEG-4 DD-CtrlHD 22 January 2010 15:54 UTC www.rlslog.net [Source type: FILTERED WITH BAYES]

    These files also store non-MPEG-4 data (H.263, AMR, TX3G).
The common but non-standard use of the extensions .m4a and .m4v is due to the popularity of Apple’s iPod, iPhone, and iTunes Store. Nintendo's DSi can play M4A. With modification, Sony's PSP can also play M4A.

Data streams

.Almost any kind of data can be embedded in MPEG-4 Part 14 files through private streams.^ MPEG-4 Part 14 Multimedia Container .
  • Browse file extensions starting with M 22 January 2010 15:54 UTC www.openwith.org [Source type: FILTERED WITH BAYES]

^ Almost any kind of data can be embedded in MPEG-4 Part 14 files through private streams; the widely-supported codecs and additional data streams are: Video: MPEG-4 Part 10 (or H.264, also known as MPEG-4 AVC), MPEG-4 Part 2, MPEG-2, and MPEG-1.
  • RealZeal Soft Inc. Knowledge Base - Popular Videos 22 January 2010 15:54 UTC www.rzfun.com [Source type: FILTERED WITH BAYES]

^ Almost any kind of data can be embedded in MPEG-4 Part 14 files through private streams; the widely-supported codecs and additional data streams are: • Video: MPEG-4 Part 10 (also known as H.264 and MPEG-4 AVC), MPEG-4 Part 2, MPEG-2, and MPEG-1.

.The registered codecs for MPEG-4 Part 12-based files are published on the website of MP4 Registration authority (mp4ra.org),[19] but most of them are not widely supported by MP4 players.^ I understand it is MPEG-4 so its .mp4 file?
  • Releaselog | RLSLOG.net » Transformers HD DVD 1080p AVC/MPEG-4 DD-CtrlHD 22 January 2010 15:54 UTC www.rlslog.net [Source type: FILTERED WITH BAYES]

^ Motion JPEG2000 (based on MPEG-4 part 12, the ISO Base Media File Format) .
  • State of the Art/Containers - Media Fragments Working Group Wiki 22 January 2010 15:54 UTC www.w3.org [Source type: Reference]

^ MP4 File Format (MPEG-4 part 14) (based on MPEG-4 part 12, the ISO Base Media File Format) .
  • State of the Art/Containers - Media Fragments Working Group Wiki 22 January 2010 15:54 UTC www.w3.org [Source type: Reference]

The widely-supported codecs and additional data streams are:[citation needed]
.

See also

Notes

  1. ^ a b 3GPP2 (18 May 2007) (PDF). 3GPP2 C.S0050-B Version 1.0, 3GPP2 File Formats for Multimedia Services. 3GPP2. p. 67, 68. http://www.3gpp2.org/Public_html/specs/C.S0050-B_v1.0_070521.pdf. Retrieved 2009-06-12. 
  2. ^ a b mp4ra.org - MP4 Registration authority. "References, MPEG-4 Registration authority". http://www.mp4ra.org/specs.html. Retrieved 2009-06-14. 
  3. ^ ISO (2006-04). ISO Base Media File Format white paper - Proposal. archive.org. http://web.archive.org/web/20080714101745/http://www.chiariglione.org/mpeg/technologies/mp04-ff/index.htm. Retrieved 2009-12-26. 
  4. ^ ISO (2005-10). MPEG-4 File Formats white paper - Proposal. archive.org. http://web.archive.org/web/20080115035235/http://www.chiariglione.org/mpeg/technologies/mp04-ff/index.htm. Retrieved 2009-12-26. 
  5. ^ ISO (2009-10). ISO Base Media File Format white paper - Proposal. chiariglione.org. http://mpeg.chiariglione.org/technologies/mpeg-4/mp04-ff/index.htm. Retrieved 2009-12-26. 
  6. ^ Apple Computer. "MPEG-4 Fact Sheet". http://images.apple.com/quicktime/pdf/MPEG4_v3.pdf. 
  7. ^ RE: QT vs MPEG-4
  8. ^ International Organization for Standardization (2003). "MPEG-4 Part 14: MP4 file format; ISO/IEC 14496-14:2003". http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=38538. Retrieved 2009-06-11. 
  9. ^ Apple Inc. (2001). "Classic Version of the QuickTime File Format Specification". http://developer.apple.com/standards/classicquicktime.html. Retrieved 2009-06-14. 
  10. ^ Library of Congress (2001). "MPEG-4 File Format, Version 1". http://www.digitalpreservation.gov/formats/fdd/fdd000037.shtml. Retrieved 2009-06-14. 
  11. ^ Network Working Group (2006). "MIME Type Registration for MPEG-4". http://tools.ietf.org/html/rfc4337#page-4. Retrieved 2009-06-14. 
  12. ^ International Organization for Standardization (2001). "MPEG-4 Part 1: Systems; ISO/IEC 14496-1:2001". http://www.iso.org/iso/iso_catalogue/catalogue_ics/catalogue_detail_ics.htm?csnumber=34903. Retrieved 2009-06-11. 
  13. ^ Library of Congress (2003). "MPEG-4 File Format, Version 2". http://www.digitalpreservation.gov/formats/fdd/fdd000155.shtml. Retrieved 2009-06-14. 
  14. ^ a b c ISO (2008) (PDF). ISO/IEC 14496-12:2008, Information technology -- Coding of audio-visual objects -- Part 12: ISO base media file format. International Organization for Standardization. p. 88, 94. http://standards.iso.org/ittf/PubliclyAvailableStandards/c051533_ISO_IEC_14496-12_2008.zip. Retrieved 2009-05-30. 
  15. ^ International Organization for Standardization (2004). "MPEG-4 Part 12: ISO base media file format; ISO/IEC 14496-12:2004". http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=38539. Retrieved 2009-06-11. 
  16. ^ Steven Greenberg (2009). "Registration of ftyp's". http://www.ftyps.com/mp4reg.html. Retrieved 2009-06-15. 
  17. ^ Steven Greenberg (2009). "Complete List of all known MP4 / QuickTime 'ftyp' designations". http://www.ftyps.com/. Retrieved 2009-06-15. 
  18. ^ Doom9's Forum, MP4 FAQ, Retrieved on 2009-07-15
  19. ^ mp4ra.org - MP4 Registration authority, Registered Types - Codecs - ISO Code Points, Retrieved on 2009-07-14.

External links


Citable sentences

Up to date as of December 29, 2010

Here are sentences from other pages on MPEG-4 Part 14, which are similar to those in the above article.








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