MPEG transport stream
Transport Stream was designed for tape and broadcast, but it required modifications for usage with random-access media devices like new generation of digital camcorders that record onto DVD disks, hard drives or solid-state memory cards.
Random-access based systems may save data packets into a temporary buffer if a storage device is not ready, for example on device startup. Packets are written out of order, and to keep track of them, a 4-byte timecode (TC) is added to standard 188-byte packets. The result is a 192-byte packet. This is what is informally called M2TS stream. Sony calls it "BDAV MPEG-2 transport stream". JVC calls it TOD (possibly an abbreviation for "Transport stream on media") when used in HDD-based camcorders like GZ-HD7.[8] M2TS transport stream is also used in AVCHD.
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References
- ^ http://neuron2.net/library/mpeg2/iso13818-1.pdf
- ^ TSReader Support
- ^ DVB scrambling control bits defined. Page 6
- ^ (2000-12-01) ISO/IEC 13818-1 Second edition, page xi or 11 according to PDF viewer.
- ^ ATSC transmission
- ^ MPEG Systems FAQ
- ^ Tektronix: Products > ATSC MPEG Transport Stream Monitor - AT970: Characteristics/Specs
- ^ Steve Mullen, M2TS primer.
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See also
- ATSC tuner
- DVB
- Elementary stream
- Program stream
- IPTV
- MPEG-2
- Packetized Elementary Stream
- Program and System Information Protocol
- Unidirectional Lightweight Encapsulation (ULE)
- HDV and AVCHD, which both implement TS streams to packetize data
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External links
- MPEG-2 Systems FAQ
- MPEG-4 Systems FAQ
- MPEG-1 description
- Powerpoint MPEG-2 Transport Stream introduction [1]
- Splicing FAQ
- Freeware TS-Muxer
- DVB Transport Stream.pdf
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