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CLC number: TN919.81

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Received: 2005-11-21

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Journal of Zhejiang University SCIENCE A 2006 Vol.7 No.10 P.1695~1701

http://doi.org/10.1631/jzus.2006.A1695


Unequal Forced-Intra-Refresh for robust video streaming


Author(s):  LIU Hao, ZHANG Wen-jun, YANG Xiao-kang

Affiliation(s):  Institute of Image Communication and Information Processing, Shanghai Jiao Tong University, Shanghai 200240, China

Corresponding email(s):   liu_hao@sjtu.edu.cn

Key Words:  Video streaming, Error propagation, Intra refresh, Packet loss resilience, Group of pictures (GOP)


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.

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author="LIU Hao, ZHANG Wen-jun, YANG Xiao-kang",
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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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J0 - Journal of Zhejiang University Science A
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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.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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[3] Côté, G., Shirani, S., Kossentini, F., 2000. Optimal mode selection and synchronization for robust video communications over error-prone networks. IEEE J. Select. Areas Commun., 18(6):952-965.

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[5] Kumwilaisak, W., Hou, Y.T., Zhang, Q., Zhu, W., Kuo, C.C., Zhang, Y.Q., 2003. A cross-layer quality of service mapping architecture for video delivery in wireless networks. IEEE J. Select. Areas Commun., 21(10):1685-1698.

[6] Stockhammer, T., Kontopodis, D., Wiegand, T., 2002. Rate-distortion Optimization for JVT/H.26L Coding in Packet Loss Environment. Packet Video Workshop’2002. Pittsburgh, PY.

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[8] Tu, W., Eckehard, S., 2004. Proxy-based Error Tracking for H.264 Based Real-time Video Transmission in Mobile Environments. IEEE International Conference on Multimedia & Expo (ICME’04). Taipei, p.1367-1370.

[9] Zhang, R., Regunathan, S.L., Rose, K., 2000. Video coding with optimal inter/intra-mode switching for packet loss resilience. IEEE J. Select. Areas Commun., 18(6):966-976.

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