Patent ID: 9124953
Filing Date: 2015-09-01
Classification: H04N

Abstract:
1. A method for transmitting video data encoded in a scalable video stream representing said video data in a plurality of layers, comprising, for at least one layer: a step of obtaining pre-encoded macroblocks of said scalable video stream representing said video data in a plurality of layers, a step of grouping macroblocks, used for inter layer prediction, of the pre-encoded macroblocks obtained by the obtaining step, into first groups of macroblocks, a step of grouping macroblocks, not used for inter layer prediction, of the pre-encoded macroblocks obtained by the obtaining step, into second groups of macroblocks, a step of estimating on a plurality of periods of time, a metric of loss rate variance over a network, said loss rate variance being based on deviation of a loss rate computed for each period from an average of loss rates computed on a set comprising a plurality of consecutive periods, a step of selecting groups of macroblocks from the first and second groups of macroblocks based on the metric of loss rate variance estimated by the estimating step, and a step of transmitting the groups of macroblocks selected by the selecting step over the network.