Rate-smoothed encoding for real-time video streaming applications

Jianhua Wu; Jianfei Cai

doi:10.1117/12.705835

29 January 2007 Rate-smoothed encoding for real-time video streaming applications

Jianhua Wu, Jianfei Cai

Proceedings Volume 6508, Visual Communications and Image Processing 2007; 650819 (2007) https://doi.org/10.1117/12.705835
Event: Electronic Imaging 2007, 2007, San Jose, CA, United States

Abstract

For real-time video streaming applications over the constant bit rate channels, it is highly desired that video signals can be encoded in not only good average quality but also smooth video quality. However, in the case that the network resource is sufficiently large and the video quality has reached the target quality, the quality smoothing is not necessary and the rate smoothing is desired to avoid overusing the unnecessary network resource but also achieve a smoothed traffic rate. In this paper, we propose a novel real-time rate-smoothed encoding scheme by applying the low pass filtering idea. Both theoretical analysis and experimental results show that the proposed rate-smoothed encoding scheme can achieve a target average quality while significantly reducing the peak rate and the rate variance. We have further proposed a joint quality and rate smoothed encoding scheme, which can provide adaptive smoothing according to different situations. Experimental results show that the proposed joint smoothing scheme can make an optimal balance between the quality fluctuation and the rate fluctuation, and hence improve the overall system performance.

Citation Download Citation

Jianhua Wu and Jianfei Cai "Rate-smoothed encoding for real-time video streaming applications", Proc. SPIE 6508, Visual Communications and Image Processing 2007, 650819 (29 January 2007); https://doi.org/10.1117/12.705835

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KEYWORDS

Video

Computer programming

Video coding

Distortion

Smoothing

Linear filtering

Detection and tracking algorithms

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