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What carries MPEG-2 Transport Streams?

April 26, 2017carries MPEG-2 Streams transport

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What carries MPEG-2 Transport Streams?

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MPEG-2 Transport Streams carry transport packets. These packets carry two types of information: the compressed material and the associated signaling tables. A transport packet is identified by its PID (Packet Identifier). Each PID is assigned to carry either one particular compressed material (and only this material) or one particular signaling table. The compressed material consists of elementary streams which may be built from video, audio or data material. These elementary streams may be tightly synchronized (as it is usually necessary for Digital TV programs, or for Digital Radio programs), or not synchronised (in the case of programs offering downloading of software or games, as an example). The associated signaling tables consist of the description of the elementary streams which are combined to build programs, and in the description of those programs. Tables are carried in sections. The signaling tables are called PSI (Program Specific Information).