Layers of Communication
Similar to the OSI network protocol stack, a transport stream is processed by the receiver in layers. An example stream containing video may be processed as follows:
- Composition of the various programs
- Packetized elementary stream (PES)
- Elementary stream (ES) — audio or video (the below is for video only)
- Group of pictures (GOP) — providing random access points
- Slice — preventing an error from being propagated through intra prediction
- Macroblock—consisting of 6 to 12 DCT blocks
- Encoding block or just block—a DCT encoding block, 8x8 pixels
An example of data that is multiplexed or muxed into the transport stream is an electronic program guide.
Read more about this topic: MPEG Transport Stream
Famous quotes containing the words layers of and/or layers:
“The force of a death should be enormous but how can you know what kind of man you’ve killed or who was the braver and stronger if you have to peer through layers of glass that deliver the image but obscure the meaning of the act? War has a conscience or it’s ordinary murder.”
—Don Delillo (b. 1926)
“The force of a death should be enormous but how can you know what kind of man you’ve killed or who was the braver and stronger if you have to peer through layers of glass that deliver the image but obscure the meaning of the act? War has a conscience or it’s ordinary murder.”
—Don Delillo (b. 1926)