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Advanced Temporal-spatial Error Concealment Algorithm for Video Coding in H . 264 / AVC

Low bandwidth and high error rates are characteristic properties of mobile communication environments. Video transmitted over networks based on IP protocol is always subject to packet loss due to network congestion and channel noise. The major limitation of mobile networks is low transmission bit rate which demands the reduction of the used video resolution and high efficient video compression technique. Standard H.264/AVC, which is explained in this paper, is the newest video compression codec, which provides a distinct improvement of quality in comparison with previous video standards. Real-time transmission of video data in network environments, such as wireless network, is a challenging task, as it’s impossible to retransmit the erroneous or lost macroblocks. Therefore there is a need for postprocessing method, which try to restore the missing or corrupted video content by using the previously decoded video data. In this paper we present a modified advanced temporal-spatial error concealment technique for H.264/AVC coded video. Simulations were done in computing environment Matlab using two standard video-sequences. Keywords—error concealment, frame, macroblock, slice