Video image information may be presented in a specific system with, for example, its own frame rate, line count per frame, and line resolution (if the system is analog, resolution = video bandwidth; if the system is digital, resolution = pixels per line) and need to be recast into a target system differing in one or more of the specifications. Or in post-production, it may be desirable to change image size, to crop or zoom, or to distort geometrically, etc. The original signal is sampled and the samples processed by a suitable algorithm to generate a new set of samples compatible with the specifications of the target system.