A Sequence begins with a unique 32 bit start code followed by a header.
The header carries:
frame rate and bit rate
optional quantizer matrices
required decoder buffer size
optional user data
The sequence information is needed for channel changing. The sequence length depends on acceptable channel change delay.
- Field DCT Coding and Frame DCT Coding
- GROUP of PICTURES (GOP)
- PACKETIZED ELEMENTARY STREAM
Up to MPEG 2 Video Data Structures