| 摘要 |
A method of coding video pictures in a PB frames mode comprises the steps of: a) initializing a sum value; b) determining, for each block of a picture, a block motion vector, defining the block motion against the previous picture; c) computing a value indicating of the amount of each block motion vector and comparing each indicative value against a first predetermined threshold value; d) for each block motion vector, if the indicative value thereof exceeds said first predetermined threshold value, incrementing said sum value; e) if, after completing the comparison for all block motion vectors, said sum value exceeds a second predetermined threshold value, then; f) coding the video picture as comprising at least one P-picture, but no B-picture.
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