Method and system for combining video sequences with spatio-temporal alignment

Given two video sequences (IS1, IS2), a composite video sequence (15) can be generated which includes visual elements (A, B, 21) from each of the given sequences, suitably synchronized and represented in a chosen focal plane. For example, given two video sequences with each showing a different contestant individually racing the same downhill course, the composite sequence can include elements from each of the given sequences to show the contestants as if racing simultaneously. A composite video sequence can be made also by similarly combining a video sequence with an audio sequence. The given video sequence can be from the perspective of conveyance of interest, e.g. cars, boats or airplanes.