英语语法分析

Well those are both is's of predication aren't they?

那些是都是谓语，不是吗？

It is one of key technique of video analysis and motion predication in video compression.

在视频图像数据压缩技术中，视频分析及运动预测是其中的关键技术之一。

So, the emphasis of this paper is optimization of motion predication based video analysis.

因此本文的重点就是基于视频分析对运动预测和运动补偿进行优化。