MPEG-2 TS

System Bitstream

 

Program Stream (PS)

quasi-error free environment (e.g., CD)

 

Transport Stream (TS)

error-prone environment (broadcasting, lossy/noisy media, network, etc.)

 

 Viddeo encoder -> "VES" -> Packetizer -> "VPES" -> TS Mux -> "TS stream"

  Audio encoder  -> "AES" -> Packetizer -> "APES" -> //

 

TS packet의 마지막에 공간이 남는 경우 다른 data type을 넣지 않기 위해서 stuff bytes를 채워 넣는다.

 

• TS
  • 188 bytes length
  • 4 bytes header + payload
  • contains only one type of data i.e., video, audio, data, program guide information(PGI)
  • (opt) PCR: timing information 
  • why fixed length?
    • robustness: minimize impact of cell loss
    • scalability / extensiblility
    • cost-effective implementation