It is useful to research the qualities of every kind of frame vectors and their mutual relations.
这有利于研究每种类型的框架向量和它们的相互关系。
The reference frame is a past frame from which to grab pixels from and the motion vectors index an offset into that frame.
参考帧是过去的某个帧，可以从中提取某些像素，以及运动矢量偏移索引。
Compressed parameters include type of frame, type of macroblock, DC coefficients, and motion vectors.
算法中利用的压缩参数主要有帧类型、宏块类型、DC系数、运动矢量。
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