TCP video streaming: TCP throughput(rate) and RTT

Posted by misteryes on Super User See other posts from Super User or by misteryes
Published on 2013-07-02T22:58:55Z Indexed on 2013/07/02 23:09 UTC
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Filed under:

networking

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streaming

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tcp

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video-streaming

we know that a rough estimation of TCP rate is: WINDOW/RTT, where WINDOW is the min(CWIN, RWIN), CWIN is the congestion window size of the sender, while RWIN is the receiving window.

nowadays, the encoding rate of videos may be 1000KB/s(8000kbit/s), if RTT is 500ms, it needs the window size to be 2000KB. But we know that usually the receiving window size is below 64KB, there is a big gap.

so if RTT is too large, TCP streaming is not possible?

Is my understanding right?

thanks!

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