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Packet Loss Recovery for H.264 Video Transmission Over the Interne  

Ha, Ho-Jin (연세대학교 전기전자공학부)
Kim, Young-Yong (연세대학교 전기전자공학부)
Yim, Chang-Hoon (건국대학교 인터넷미디어공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.10C, 2007 , pp. 950-958 More about this Journal
Abstract
This paper presents an efficient packet loss resilient scheme for real-time video transmission over the Internet. By analyzing the temporal and spatial dependencies in inter- and intra-frames, we assign forward error correction codes (FEC) across video packets for minimizing the effect of error concealment and error propagation from packet loss. To achieve optimal allocation of FEC codes, we formulate the effect of packet loss on video quality degradation as packet distortion model. Then we propose an unequal FEC assignment scheme with low complexity based on packet correction rate, which uses the packet distortion model and includes channel status information. Simulation results show that the proposed FEC assignment scheme gives substantial improvement for the received video quality in packet lossy networks. Furthermore the proposed scheme achieves relatively smaller degradation of video quality with higher packet loss rates.
Keywords
Forward error correction (FEC); Unequal loss protection; Packet loss; H.264; Video transmission;
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