Use in Digital Video Cameras
Transport Stream had been originally designed for broadcast. Later it was adapted for usage with digital video cameras, recorders and players by adding a 4-byte timecode (TC) to standard 188-byte packets, which resulted in a 192-byte packet. This is what is informally called M2TS stream. Blu-ray Disc Association calls it "BDAV MPEG-2 transport stream". JVC called it TOD (possibly an abbreviation for "Transport stream on disc") when used in HDD-based camcorders like GZ-HD7. M2TS transport streams are also used for recording HDV video (onto tape and onto file-based media), and for AVCHD video files, which often have an MTS extension. The timecode allows quick access to any part of the stream either from a media player, or from a non-linear video editing system. It is also used to synchronize video streams from several cameras in a multi-camera shoot.
Read more about this topic: MPEG Transport Stream
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