This paper proposes a novel scheme for multiple description video coding approach using slice group coding tool proposed in H.264. Three motion compensation loops, one central and two side loops, are maintained for two descriptions in the encoder. The central encoder is exactly the same as basic single description encoder, while side encoder uses information from main encoder to do the motion compensation with easily controlled amount of redundancy. If there is no loss, this scheme is completely standard compliant which doesn't need any further processing at decoder side. The rate-distortion of side encoder can be controlled in a very large dynamic range, so that redundancy can be easily managed with specific requirement of bitrate or side quality, unlike some other MDC methods with fixed redundancy. Results show that our scheme works with better performance and more flexibility than [8], which is 2 loop slice group based MDC, and keeps subjective quality very good.
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