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CLC number: TN919.81
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Received: 2005-11-21
Revision Accepted: 2006-03-09
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Unequal Forced-Intra-Refresh for robust video streaming
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LIU Hao, ZHANG Wen-jun, YANG Xiao-kang. Unequal Forced-Intra-Refresh for robust video streaming[J]. Journal of Zhejiang University Science A, 2006, 7(10): 1695-1701.
@article{title="Unequal Forced-Intra-Refresh for robust video streaming",
author="LIU Hao, ZHANG Wen-jun, YANG Xiao-kang",
journal="Journal of Zhejiang University Science A",
volume="7",
number="10",
pages="1695-1701",
year="2006",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2006.A1695"
}
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%DOI 10.1631/jzus.2006.A1695
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T1 - Unequal Forced-Intra-Refresh for robust video streaming
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A1 - YANG Xiao-kang
J0 - Journal of Zhejiang University Science A
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%@ 1673-565X
Y1 - 2006
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2006.A1695
Abstract: For video streaming over lossy channels, intra refresh can mitigate the error-propagation effect caused by packet losses. Besides some intra-mode macroblocks (MBs) generated by the “Lagrangian rate-distortion” or “Sum of absolute difference” mode decision, the encoder or transcoder possibly needs to increase some “forced” intra-mode MBs for robust video streaming. Based on the error-propagation analysis in a group of pictures (GOP), we propose an unequal Forced-Intra-Refresh (FIR) scheme to improve packet loss resilience of video streaming. According to a GOP-level error-propagation model, the proposed unequal FIR scheme can optimally increase the unequal number of forced intra-mode MBs for different frames in a GOP. Simulation results showed that the proposed scheme can effectively enhance the robustness of video streaming under different channel conditions, and achieve about 0.1~0.9 dB gains over the average FIR scheme in H.264/AVC tools.
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