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.m2ts

January 01, 1970

Not to be confused with .m2t.

.m2ts is a filename extension used for the Blu-ray disc Audio-Video (BDAV) MPEG-2 Transport Stream (M2TS) container file format. It is used for multiplexing audio, video and other streams, such as subtitles. It is based on the MPEG-2 transport stream container.[2][3][4][5] This container format is commonly used for high definition video on Blu-ray Disc and AVCHD.[6]

BDAV MPEG-2 Transport Stream
Filename extension
.m2t, .m2ts, .MTS
Internet media type
video/MP2T[1]
Developed byBlu-ray Disc Association
Initial releaseAugust 2004; 19 years ago (2004-08)
Latest release
5th edition
January 2018; 6 years ago (2018-01)
Type of formatContainer format
Container forAudio, video, data
Contained byBlu-ray Disc, AVCHD
Extended fromMPEG-2 transport stream (ISO/IEC 13818-1)
Open format?Yes
Free format?No

Overview edit

The BDAV container format is a modification of the MPEG-2 transport stream (ITU-T H.222.0 | ISO/IEC 13818-1) specification for random-access media, such as Blu-ray discs, DVDs, hard drives or solid-state memory cards. The format is informally called M2TS.

In order to optimize the storage size, the format uses variable rate Transport Streams instead of the constant rates found in MPEG-2 TS broadcast. To be able to reconstruct a T-STD compliant constant rate Transport Stream for playback, the arrival timestamp of each packet needs to be recorded.[7]

The standard MPEG-2 TS 188-byte packet is prefixed with a 4-byte extra header to a total size of 192 bytes. The header consists of a 2-bit copy permission indicator and the 30-bit arrival timestamp with a resolution of 27 MHz.[8]

The BDAV container format (.m2ts) is a standard used on Blu-ray discs.[9][10][11] Blu-ray disc titles authored with menu support are in the BDMV (Blu-ray disc Movie) format and contain audio, video, and other streams in a BDAV container (.m2ts), which is based on the MPEG transport stream format.[4][5] The BDAV container is also used in the BDAV (Blu-ray disc Audio/Visual) disc format, the consumer-oriented alternative to the BDMV discs. The BDAV disc format is used on BD-RE and BD-R discs for audio/video recording.[5][12]

The BDAV container with filename extension .MTS or .m2ts is also used in AVCHD format, which is a high-definition digital video camera recorder format.[13] AVCHD is a simpler form of the Blu-ray disc standard with just one video encoding algorithm and two audio encodings.[13][14] Compared to Blu-ray disc format, AVCHD can use various storage media, such as DVD media, memory cards or hard disk drives. The BDAV container contains videos recorded using AVCHD camcorders, such as Sony's HDR-SR(xx) series models. Panasonic, Canon and other brands of AVCHD camcorders also store recorded video in the BDAV container format.

Formats edit

The BDAV container format used on Blu-ray discs can contain one of the three mandatory supported video compression formats–H.262/MPEG-2 Part 2, H.264/MPEG-4 AVC or SMPTE VC-1[15]–and audio compression formats, such as Dolby Digital, DTS or uncompressed Linear PCM. Optionally supported audio formats are Dolby Digital Plus, DTS-HD High Resolution Audio, DTS-HD Master Audio and Dolby TrueHD.[11][16]

The BDAV container format used on AVCHD equipment is more restricted and can contain only H.264/MPEG-4 AVC video compression and Dolby Digital (AC-3) audio compression or uncompressed LPCM audio.[14]

File and directory structure edit

See also: Blu-ray Disc § Directory and file structure, and AVCHD § Overview

The names of M2TS files are in the form zzzzz.m2ts, where zzzzz is a 5-digit number corresponding to the audiovisual clip. This number is also used in the filename of an associated clip information file "zzzzz.clpi".[11] (This number can be a date and time stamp of when the video clip was recorded.) Each stream has its own file.[17]

Files in the AVCHD format use the legacy 8.3 filename convention, whereas Blu-ray discs use long filenames. This is why the filename extension of video files is ".MTS" instead of Blu-ray disc's ".m2ts". Also, other files use different extensions: .CPI – .clpi, .MPL – .mpls, .BDM – .bdmv.[13][18][19]

The M2TS files on a Blu-ray disc are placed in the subdirectory "STREAM" of the "BDMV" (or "BDAV") directory, which is at the root level. (e.g. \BDMV\STREAM\00001.m2ts or \BDAV\STREAM\00001.m2ts)[2][10] On some AVCHD equipment, the "BDMV" directory is located in the "AVCHD" directory, which is placed at the root level (e.g. \AVCHD\BDMV\STREAM\00001.MTS).[13]

Software support edit

Almost all commercially produced Blu-ray disc titles use a copy protection method called the Advanced Access Content System, which encrypts the content of the disc, including M2TS files. Software that supports M2TS files usually works only with decrypted or unencrypted files. Blu-ray disc software players can usually play back encrypted content from the original disc. Video content created using AVCHD equipment is commonly unencrypted.

Most M2TS files can be played with ALLPlayer, MPlayer, VLC, PotPlayer and other media players, depending on the compression formats used in the M2TS file. Some players will need an appropriate codec, component or plugin installed.

Current versions of Nero Vision, FormatFactory, MediaCoder, HandBrake and Picture Motion Browser are capable of converting M2TS files into MPEG-4 files, which can also be viewed using the aforementioned media players.

M2TS files can also be played on Sony PlayStation 3s, Sony Bravia TVs, Western Digital WDTVs, Xtreamer media player, Amkette FlashTV HD Media Player and Panasonic Viera TVs supporting playback of AVCHD.

Apple's Final Cut Pro can read .MTS files (as stored in Sony HDR camcorders) by using the AVCHD plugin in the Log and Transfer window.[19]

See also edit

Notes edit

  1. ^ RFC 3555: "MIME subtype name: MP2T – MPEG-2 Transport Streams". Accessed 2009-09-01. 2009-09-04.
  2. ^ a b Blu-ray Disc Association (March 2005) BD ROM – Audio Visual Application Format Specifications (PDF) Page 15, Retrieved on 2009-07-26. 2009-07-29.
  3. ^ Blu-ray Disc Association (2010), (PDF), archived from the original (PDF) on 2011-07-08, retrieved 2010-06-10
  4. ^ a b AfterDawn.com Glossary – BD-MV (Blu-ray Disc Movie) and BDAV container, Retrieved on 2009-07-26. 2009-07-29.
  5. ^ a b c AfterDawn.com Glossary – BDAV container, Retrieved on 2009-07-26
  6. ^ "VideoHelp Glossary – M2T, m2ts, mts". Retrieved 2010-06-10.
  7. ^ Doom9.org forum (2006) New HD Format - AVCHD (By Sony and Panasonic)
  8. ^ Doom9.org forum (2011) Question about m2ts h264 files
  9. ^ Blu-ray Disc Association (August 2004) Blu-ray Disc Format, White paper 2009-06-12 at the Wayback Machine (PDF) Pages 18 and 22, Retrieved on 2009-07-28
  10. ^ a b Blu-ray Disc Association (March 2008) BD RE – Audiovisual Application Format Specification for BD-RE 2.1 (PDF), Retrieved on 2009-07-28. 2009-07-29.
  11. ^ a b c Videohelp.com What is Blu-ray Disc and HD DVD?, Retrieved on 2009-07-26. 2009-07-29.
  12. ^ Sony. "Upscale Blu-ray Disc (BDAV) content". Retrieved 2010-06-10.
  13. ^ a b c d Backing up AVCHD video onto DVDs and playing them on a Blu-ray Disc player, Retrieved on 2009-07-27. 2009-07-29.
  14. ^ a b AVCHD Information Website AVCHD format specification overview, Retrieved on 2009-07-27
  15. ^ "Blu-ray Disc To Support WHS, MPEG-4, VC-1 – PC World". from the original on 2009-05-20. Retrieved 2009-07-01.
  16. ^ . TWICE. Archived from the original on 2009-04-09. Retrieved 2009-01-29.
  17. ^ M2TS filename extension, Retrieved on 2009-07-27. 2009-07-29.
  18. ^ Doom9.org forum (2008) Changing Blu-ray Disc structure to AVCHD, Retrieved on 2009-07-29
  19. ^ a b "MTS". iCoolsoft. from the original on 2012-01-26. Retrieved 2012-03-07.

January 01, 1970
m2ts, confused, with, this, article, technical, most, readers, understand, please, help, improve, make, understandable, experts, without, removing, technical, details, april, 2022, learn, when, remove, this, message, filename, extension, used, disc, audio, vid. Not to be confused with m2t This article may be too technical for most readers to understand Please help improve it to make it understandable to non experts without removing the technical details April 2022 Learn how and when to remove this message m2ts is a filename extension used for the Blu ray disc Audio Video BDAV MPEG 2 Transport Stream M2TS container file format It is used for multiplexing audio video and other streams such as subtitles It is based on the MPEG 2 transport stream container 2 3 4 5 This container format is commonly used for high definition video on Blu ray Disc and AVCHD 6 BDAV MPEG 2 Transport StreamFilename extension m2t m2ts MTSInternet media typevideo MP2T 1 Developed byBlu ray Disc AssociationInitial releaseAugust 2004 19 years ago 2004 08 Latest release5th editionJanuary 2018 6 years ago 2018 01 Type of formatContainer formatContainer forAudio video dataContained byBlu ray Disc AVCHDExtended fromMPEG 2 transport stream ISO IEC 13818 1 Open format YesFree format No Contents 1 Overview 2 Formats 3 File and directory structure 4 Software support 5 See also 6 NotesOverview editThe BDAV container format is a modification of the MPEG 2 transport stream ITU T H 222 0 ISO IEC 13818 1 specification for random access media such as Blu ray discs DVDs hard drives or solid state memory cards The format is informally called M2TS In order to optimize the storage size the format uses variable rate Transport Streams instead of the constant rates found in MPEG 2 TS broadcast To be able to reconstruct a T STD compliant constant rate Transport Stream for playback the arrival timestamp of each packet needs to be recorded 7 The standard MPEG 2 TS 188 byte packet is prefixed with a 4 byte extra header to a total size of 192 bytes The header consists of a 2 bit copy permission indicator and the 30 bit arrival timestamp with a resolution of 27 MHz 8 The BDAV container format m2ts is a standard used on Blu ray discs 9 10 11 Blu ray disc titles authored with menu support are in the BDMV Blu ray disc Movie format and contain audio video and other streams in a BDAV container m2ts which is based on the MPEG transport stream format 4 5 The BDAV container is also used in the BDAV Blu ray disc Audio Visual disc format the consumer oriented alternative to the BDMV discs The BDAV disc format is used on BD RE and BD R discs for audio video recording 5 12 The BDAV container with filename extension MTS or m2ts is also used in AVCHD format which is a high definition digital video camera recorder format 13 AVCHD is a simpler form of the Blu ray disc standard with just one video encoding algorithm and two audio encodings 13 14 Compared to Blu ray disc format AVCHD can use various storage media such as DVD media memory cards or hard disk drives The BDAV container contains videos recorded using AVCHD camcorders such as Sony s HDR SR xx series models Panasonic Canon and other brands of AVCHD camcorders also store recorded video in the BDAV container format Formats editThe BDAV container format used on Blu ray discs can contain one of the three mandatory supported video compression formats H 262 MPEG 2 Part 2 H 264 MPEG 4 AVC or SMPTE VC 1 15 and audio compression formats such as Dolby Digital DTS or uncompressed Linear PCM Optionally supported audio formats are Dolby Digital Plus DTS HD High Resolution Audio DTS HD Master Audio and Dolby TrueHD 11 16 The BDAV container format used on AVCHD equipment is more restricted and can contain only H 264 MPEG 4 AVC video compression and Dolby Digital AC 3 audio compression or uncompressed LPCM audio 14 File and directory structure editSee also Blu ray Disc Directory and file structure and AVCHD Overview The names of M2TS files are in the form zzzzz m2ts where zzzzz is a 5 digit number corresponding to the audiovisual clip This number is also used in the filename of an associated clip information file zzzzz clpi 11 This number can be a date and time stamp of when the video clip was recorded Each stream has its own file 17 Files in the AVCHD format use the legacy 8 3 filename convention whereas Blu ray discs use long filenames This is why the filename extension of video files is MTS instead of Blu ray disc s m2ts Also other files use different extensions CPI clpi MPL mpls BDM bdmv 13 18 19 The M2TS files on a Blu ray disc are placed in the subdirectory STREAM of the BDMV or BDAV directory which is at the root level e g BDMV STREAM 00001 m2ts or BDAV STREAM 00001 m2ts 2 10 On some AVCHD equipment the BDMV directory is located in the AVCHD directory which is placed at the root level e g AVCHD BDMV STREAM 00001 MTS 13 Software support editAlmost all commercially produced Blu ray disc titles use a copy protection method called the Advanced Access Content System which encrypts the content of the disc including M2TS files Software that supports M2TS files usually works only with decrypted or unencrypted files Blu ray disc software players can usually play back encrypted content from the original disc Video content created using AVCHD equipment is commonly unencrypted Most M2TS files can be played with ALLPlayer MPlayer VLC PotPlayer and other media players depending on the compression formats used in the M2TS file Some players will need an appropriate codec component or plugin installed Current versions of Nero Vision FormatFactory MediaCoder HandBrake and Picture Motion Browser are capable of converting M2TS files into MPEG 4 files which can also be viewed using the aforementioned media players M2TS files can also be played on Sony PlayStation 3s Sony Bravia TVs Western Digital WDTVs Xtreamer media player Amkette FlashTV HD Media Player and Panasonic Viera TVs supporting playback of AVCHD Apple s Final Cut Pro can read MTS files as stored in Sony HDR camcorders by using the AVCHD plugin in the Log and Transfer window 19 See also editComparison of container formats Enhanced VOB used on HD DVD MOD and TOD video format VOB used on DVD Notes edit RFC 3555 MIME subtype name MP2T MPEG 2 Transport Streams Accessed 2009 09 01 Archived 2009 09 04 a b Blu ray Disc Association March 2005 BD ROM Audio Visual Application Format Specifications PDF Page 15 Retrieved on 2009 07 26 Archived 2009 07 29 Blu ray Disc Association 2010 Application Definition Blu ray Disc Format BD J Baseline Application and Logical Model Definition for BD ROM March 2005 PDF archived from the original PDF on 2011 07 08 retrieved 2010 06 10 a b AfterDawn com Glossary BD MV Blu ray Disc Movie and BDAV container Retrieved on 2009 07 26 Archived 2009 07 29 a b c AfterDawn com Glossary BDAV container Retrieved on 2009 07 26 VideoHelp Glossary M2T m2ts mts Retrieved 2010 06 10 Doom9 org forum 2006 New HD Format AVCHD By Sony and Panasonic Doom9 org forum 2011 Question about m2ts h264 files Blu ray Disc Association August 2004 Blu ray Disc Format White paper Archived 2009 06 12 at the Wayback Machine PDF Pages 18 and 22 Retrieved on 2009 07 28 a b Blu ray Disc Association March 2008 BD RE Audiovisual Application Format Specification for BD RE 2 1 PDF Retrieved on 2009 07 28 Archived 2009 07 29 a b c Videohelp com What is Blu ray Disc and HD DVD Retrieved on 2009 07 26 Archived 2009 07 29 Sony Upscale Blu ray Disc BDAV content Retrieved 2010 06 10 a b c d Backing up AVCHD video onto DVDs and playing them on a Blu ray Disc player Retrieved on 2009 07 27 Archived 2009 07 29 a b AVCHD Information Website AVCHD format specification overview Retrieved on 2009 07 27 Blu ray Disc To Support WHS MPEG 4 VC 1 PC World Archived from the original on 2009 05 20 Retrieved 2009 07 01 1st HD DVD Players To Decode All Mandatory Optional Audio Codecs TWICE Archived from the original on 2009 04 09 Retrieved 2009 01 29 M2TS filename extension Retrieved on 2009 07 27 Archived 2009 07 29 Doom9 org forum 2008 Changing Blu ray Disc structure to AVCHD Retrieved on 2009 07 29 a b MTS iCoolsoft Archived from the original on 2012 01 26 Retrieved 2012 03 07 Retrieved from https en wikipedia org w index php title m2ts amp oldid 1186646895, wikipedia, wiki, book, books, library,

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