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Bit-rate
Pro-MPEG Forum:
Interoperability Ranges
Interoperability Range 1
SDTV
Up to 50 Mbits/s
Any GOP structure
Interoperability Range 2
SDTV
Up to 50 Mbits/s *
I-only coding
Interoperability Range 4
HDTV
Up to 300 Mbits/s *
I-only coding
GOP Structure
Interoperability Range 3B
HDTV
Up to 175 Mbits/s
Any GOP structure
Interoperability Range 3A
HDTV
Up to 80 Mbits/s
Any GOP structure
50,40,30
18 Mbps IB