Re:YouTube’s Bandwidth Bill Is Low
by camwest on Friday October 16, 2009 @06:19PM
(#886290)
They actually don't use HTTP, they use RTMP, try it yourself: Load up a Youtube video and scrub to the middle of the video. It will load to that very point even if it hasn't buffered that far yet.
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They use HTTP with an addition in their servers similar to this plugin: http://h264.code-shop.com/trac to do HTTP scrubbing.
Google also used Akamai for its Google Live broadcast which indicated that their network couldn't do RTMP (at the time).