Patent ID: 8605785

Claim:
A method for the transmission of a sequence of video images on a network between a server and a client, said sequence being coded according to a hybrid predictive coding mode and comprising a plurality of images, each image being broken down into a plurality of macroblocks of pixels, the method comprising: classifying said plurality of macroblocks into at least two groups of macroblocks according to a predetermined criterion; creating at least two scalable coding levels from said groups of macroblocks; completing bitstreams corresponding to said groups of macroblocks by using additional bitstream portions corresponding to missing macroblocks of said groups of macroblocks in order to obtain respective normalized bitstreams for each scalable coding level; applying unequal protection against transmission errors to said groups of macroblocks based on said predetermined criterion; and transmitting said scalable coding levels on the network, wherein said predetermined criterion defines an importance of a macroblock as a function of an estimation of quality obtained by the client in a case where the macroblock is lost during transmission, and wherein said additional bitstream portions are bitstream portions corresponding to macroblocks located in a same position as macroblocks deemed to be important, in another of said at least two scalable coding levels created from said groups of macroblocks.