"Comcast's VOD system currently supports “7% concurrency,” according to the Diffusion Group, which means only 7% of households that have access to Comcast's VOD service can use it simultaneously."
"With the spread of PVRs, consumers are becoming increasingly accustomed to watching programs on their own schedule, which will lead to spikes in simultaneous on-demand viewing that exceed the capacity of today's VOD systems."
“VOD systems will have to work much harder than they did before,” said Colin Dixon, manager of Diffusion's IP media practice. “Seven percent concurrency just doesn't cut it anymore. In fact, there's a general acceptance in the industry that we're heading toward 100% concurrency, or one stream per household. In the U.S. alone, that's 80 million streams.”
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