MPEG-2 Transport Stream

Type of format	Container format for video, audio, data
First released	August 2004
Latest release	January 2018 - 5th edition
Developer	Blu-ray Disc Association
Filename extension	.m2t
Open Format?	Yes
Free Format?	?
Magic Number	47 40 00 10 00 00 B0 11

BDs use the MPEG-2 Transport Stream (M2TS) container file format under the .m2ts filename extension. Video, audio, graphics, and other streams are stored and multiplexed (muxed) into this container.

Muxing is a method of combining multiple analog or digital signals into one signal over a shared medium. When a BD is inserted into a player, it reads and pre-loads the muxed data (Graphics/SFX/Text) into the preloading memory buffer before the Primary Video stream. The decoding and demuxing process operates on a clock of 27 Mhz.

Sources

• BD ROM – Audio Visual Application Format Specifications (PDF) Page 15,

Links

• Forum discussion
• Convert MTS/M2TS/CPI/CLPI/MPL/MPLS/BDMV files to Mac Lion
• What is M2TS?
• Blu-ray support using LAV Filters
• Convert M2TS to 3GP
• Related patent application (European Patent Application EP1821310)

Author(s) : Æ Firestone