MPEG-2 video vs. MPEG-1 (2/2)
Profiles and levels
profiles limit syntax (algorithms)
simple: no cross-referenced (B) pictures
main: supported by most decoders
main+: main with spatial and SNR scalability
next: main+ with 4:2:2 macroblocks
levels limit parameters (dimensions, rate)
low: 352x240, 4Mb/s
main: 720x480, 15Mb/s
high 1440: 1440x1152, 60Mb/s
high: 1920x1080, 80Mb/s

Standard allows for even higher
syntax and parameters
4:4:4 macroblocks
16383x16383 frames