Model-Based Delay-Distortion Optimization for Video Streaming Using Packet Interleaving

Liang, Yi J. ; Apostolopoulos, John G. ; Girod, Bernd

HP Development Company

关键词: video streaming;    packet loss;    R-D optimization;    packet interleaving;    error-resilient video;   

RP-ID  :  HPL-2002-323

学科分类：计算机科学（综合）

美国|英语

来源: HP Labs

【 摘 要 】

Bursty channel losses have been shown to generally produce larger total mean-square error distortion in streaming video than an equivalent number of isolated losses. This paper proposes a simple packet interleaving scheme to combat the effect of bursty losses by dispersing them. The optimal interleaver for minimizing the expected total distortion of the decoded video, subject to a delay constraint, is determined using a model that accurately predicts the expected distortion for different packet loss patterns. Compared to other forms of error-resilience, packet interleaving has the advantages of (1) simplicity and (2) not requiring any extra bitrate. For a simple burst loss channel, where each loss event has 100 ms duration, packet interleaving can provide between .24 and .87 dB gain over conventional non- interleaved streaming, at the expense of a delay increase of 400 ms. Notes: Copyright IEEE Presented at the 36th Asilomar Conference on Signals, Systems, and Computers, 3-6 November 2002, Pacific Grove, CA 5 Pages