Friday, January 28, 2011

Canada comes out on top as Netflix rates North American ISPs

Netflix today made good on a promise from its financial statements yesterday, and it released data on which US Internet providers offer the best access to Netflix streaming content. The company's data puts it "in the unique position of having insight into the performance of hundreds of millions of long duration, high-definition video streams delivered over the Internet."

The chart below sums up the US results; it's a "time-weighted bitrate metric" that shows throughput from Netflix content delivery networks to subscriber homes. Netflix says that its best quality HD streams are encoded at 4,800Kbps, and it's clear from the chart that no ISPs can sustain this level of service across an entire movie. But "the higher the sustained average, the greater the throughput the client can achieve, and the greater the image quality over the duration of the play," says the company.

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