Conference Paper

An integrated rate control scheme for TCP-friendly MPEG-4 video transmission

Department of Electrical Engineering, National Cheng Kung University, 臺南市, Taiwan, Taiwan
DOI: 10.1109/ISCAS.2005.1465039 Conference: Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Source: DBLP

ABSTRACT Delivering MPEG-4 real-time video over the Internet needs rate control schemes to be employed in both the compression and transport domains. In addition to the rate matching requirement between the two schemes to ensure TCP-friendliness, the demand of smoothness also has significant impact on media quality. We propose an integrated rate control scheme for MPEG-4 video transported by a TCP-friendly rate control (TFRC) protocol. Experimental results show successful integration with relatively low rate variation for video coding. Reduced frame skipping indicates, improved temporal quality while the flickering artifact, possibly caused by rate variation, is decreased through a PSNR test.

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    Conference Paper: Video TFRC
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    ABSTRACT: TCP-friendly rate control (TFRC) is a congestion control technique that trade-offs responsiveness to the network conditions for a smoother throughput variation. We take advantage of this trade-off by calculating the rate gap between the theoretical TCP throughput and the smoothed TFRC throughput. Any rate gain from this rate gap is then opportunistically used for video coding. We define a frame complexity measure to determine the additional rate to be used from the rate gap and then perform a rate negotiation to determine the target rate for the encoder and the final sending rate. Results show that although this method has a more aggressive sending rate compared to TFRC, it is still TCP-friendly, does not contribute too much to network congestion and achieves a reasonable video quality gain over the conventional method.
    Communications, 2008. ICC '08. IEEE International Conference on; 06/2008
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