Resampling

Resample_H263
Performs picture resampling defined in terms of picture area corner displacements.
UpsampleFour_H263
Performs factor-of-4 picture upsampling.
DownsampleFour_H263
Performs factor-of-4 picture downsampling.
UpsampleFour8x8_H263
Performs factor-of-4 upsampling on an 8x8 block.
SpatialInterpolation_H263
Interpolates a picture by a factor of two horizontally, vertically, or both horizontally and vertically.