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1. Transform block size differences. MPEG-2 uses fixed 8x8 blocks. AVC changed this to 4x4 blocks (with the transform designed by Microsoft btw ). VC-1 on the other hand, supports 8x8, 4x4, 4x8 and 8x4. This gives VC-1 much more flexibility to pick the optimal block size based on picture content.
怀疑MS在AVC里面是不是故意在搅浑水:lol: |
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