[Mp4-tech] Re:H.264: Intra prediction of 4*4 block

[Zhao Ran]

Hi, angle
For intra_4x4 pred, all 16 blocks are processed in invers scan order as specified in subclause 6.4.3.
For those blocks whose locations (ioff,joff) are (4,4),(4,12),(12,4),(12,12), the up-right neighbour block has not been reconstructed yet, so it can not be used to predict current block.
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Best Regards,
Zhao Ran
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