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Old 26th March 2008, 19:46   #14  |  Link
bigotti5
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Join Date: Feb 2005
Posts: 838
Quote:
... here is the math
something wrong...

Specification lists for Level 4.1:
Picture Buffer 12288 kB (12582912 Bytes)
Max MBs 8192 (1920x1088 -> 8160 Macroblocks)

so
8192 (=Macroblocks) x 256 (=pixel per macroblock) x 1.5 (= 4:2:0 video uses 12 bit per pixel = 1.5 Byte)
8192 x 256 x 1.5 = 3145728
12582912 / 3145728 = 4
Level 4.1 certified Decoder can hold 4 Ref. Frames
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