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Chapter 9. Media Streaming > MPEG-2 Video Streaming

9.5. MPEG-2 Video Streaming

As is the case for audio, video streaming requires capture, transmission and rendering. The term video often refers to combining both moving pictures and sounds, both encoded at elementary streams within PES packets. The pictures are associated with the sound through time stamps. The conversion from the elementary stream format into a transport format, typically performed by a multiplexer, essentially breaks down the data, carried in large data structures or packets, into small transport packets. In the case of MPEG, the PES packets carrying the audio and video streams are broken down to 188 byte transport packets, each carrying 4 byte headers and 184 bytes of data [MPEG2]. Finally, to enable transmission, the digital transport stream is modulated onto an RF signal (see Figure 9.14).

Figure 9.14. A simplified typical video transmission scenario.



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