[Mp4-tech] [H.264] One question regarding P_8x8ref0

[EricChuang via.com.tw]

Dear experts,
In the standard, it reads that P_8x8ref0 has the same meaning as P_8x8,
except that all refIdx of P_8x8ref0 blocks are inferred as 0. When CABAC
is used, the standard describes that P_8x8ref0 macroblock type is not
allowd. Does it mean P_8x8ref0 can only be used when CABAC is not used,
or P_8x8ref0 has been deprecated ? And is there any reason that
P_8x8ref0 cannot be used when CABAC is used ?
Appreciate for your comment in advance,
Eric
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