Cisco, RealNetworks, Adobe, Harmonic: Adaptive Streaming and HTTP
"We believe this is a game-changer in the marketspace,约翰·毕晓普说, director of strategic initiatives for Cisco, talking about adaptive streaming and HTTP delivery. Bishop was speaking at a 网络研讨会 hosted by StreamingMedia.com. Other presenters included Amol Shukla, principle engineer for RealNetworks, 凯文本文, senior product manager for Adobe, 还有摩尔·麦考利, director of multi-screen products for Harmonic.
We're going through a transformation, Bishop told the audience. He explained how we started with postage stamp-sized 240x180 RealNetworks video 10 years ago, grew to 320x240 Adobe Flash video five years ago, then to the more TV-like 1280x720 open standards video we have now.
The Beijing Olympics were a transformative time for online video, Bishop noted. The 592x336 Silverlight Olympic video marked the first time that HTTP video was streamed at scale, and marked the birth of adaptive bitrate.
"We're continuing to close the gap between a broadcast experience and a broadband experience, and one of those gaps that we continue to make year-on-year progress toward is bandwidth increases,”毕晓普说.
With even more resolutions coming in the future, Bishop said that publishers would need to manage their quality. Cisco's method is to look at bits per pixel per second. The resulting number should be between 4 and 6, he offered.
For more, including advice from RealNetworks, Adobe, and Harmonic, watch the full 网络研讨会. It will be available online for the next 90 days.
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