An MDC-Based Video Streaming Architecture for Mobile Networks
Source: Telecom of New Zealand
Multiple Description Coding (MDC) is a framework designed to improve the robustness of video content transmission in lossy environments. In this paper, the authors propose an MDC technique using a legacy coder to produce two descriptions, based on separation of even and odd frames. If only one description is received, the missing frames are reconstructed using temporal High-Order Motion Interpolation (HOMI), a technique originally proposed for distributed video coding. If both descriptions are received, the frames are reconstructed as a block-wise linear combination of the two descriptions, with the coefficient computed at the encoder in a RD-optimised fashion, encoded with a context-adaptive arithmetic coder, and sent as side information.