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H.264 is the ITU-T's new, nonbackward compatible video compression Recommendation that significantly outperforms all previous video compression standards. It consists of a video coding layer (VCL) which performs all the classic signal processing tasks and generates bit strings containing coded macroblocks, and a network adaptation layer (NAL) which adapts those bit strings in a network friendly way. The paper describes the use of H.264 coded video over best-effort IP networks, using RTP as the real-time transport protocol. After a description of the environment, the error-resilience tools of H.264 and the draft specification of the RTP payload format are introduced. Next the performance of several possible VCL- and NAL-based error-resilience tools of H.264 are verified in simulations.
Circuits and Systems for Video Technology, IEEE Transactions on (Volume:13 , Issue: 7 )
Date of Publication: July 2003