Temporal Sampling Based Multiple Description Video Coding for Scenes Switching

Due to network congestion and delay sensibility, it is always a great challenge for video transmission over lossy network. Multiple description coding (MDC) is an attractive approach to solve this problem. It can efficiently combat packet loss without any retransmission thus satisfying the demand of real time services and relieving the network congestion. In view of perfect compatibility with the standard source and channel codec, temporal sampling based MDC has become a better choice for practical applications. However, for the frames switching from one scene to another temporal correlation may be destroyed by sampled in temporal domain, which may result in the false estimation when the related frames are lost at the side decoder. To address this problem, in this paper an improved MD coding based on temporal sampling is proposed to make sure the decoder can work correctly when scenes changing.