By frame 6, the Nile River has become the focus of the image, though its distinctive triangular delta is partially covered with cloud.
到第6帧图像的时候，尼罗河成为了图像的焦点，然而云层覆盖住了那里独具特色的三角洲的一部分。
2
H. 264's, by comparison, is strength-adaptive based on whether DCT coefficients exist on either side of a given edge and based on the motion vector delta and reference framedelta across said edge.