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Abstract

A video substitution method for use with a Digital Video Recorder (DVR) which is operative to store video is disclosed. The method includes retrieving stored video recorded from a single video stream which includes a first positive integer n1 down-sampled video sequences, the n1 down-sampled video sequences being mutually synchronized and formatted in a second positive integer n2 video frames, each video frame comprising n1 spatially combined sub-pictures each of which corresponds to one frame of the n1 down-sampled video sequences, up-sampling at least part of a first one of the n1 down-sampled video sequences, thereby producing a first up-sampled video sequence, displaying the first up-sampled video sequence on a display during normal content viewing, detecting activation of a trick mode including one of the following: a fast forward mode; and a rewind mode, and in response to the detecting: up-sampling at least part of a second one of the n1 down-sampled video sequences, thereby producing a second up-sampled video sequence, and displaying the second up-sampled video sequence instead of the first up-sampled video sequence during at least part of an activation period of the trick mode. Related apparatus and methods are also disclosed.

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First Claim