Patent ID: 8824567
Filing Date: 2014-09-02
Classification: H04N

Abstract:
1. A method for tracking error propagation in a digital video encoder that encodes a digital video, the digital video having a plurality of image frames, and each image frame having a plurality of blocks of pixels, wherein a pixel dependency count for a block of pixels is initialized at a first image frame of the digital video, the method comprising the steps of: resetting the pixel dependency count for the block of pixels if the block of pixels is a part of an intra-coded macroblock in a current frame, wherein the pixel dependency count is indicative of a level of error propagation within the block of pixels; if the block of pixels is not part of the intra-coded macroblock in the current frame, refreshing one or more macroblocks, wherein the macroblock includes one or more blocks of pixels, and wherein refreshing the one or more macroblocks comprises: