How WebRTC Impacts Stream Resiliency for Contribution and Distribution
Strategizing for low-latency streaming at scale and choosing WebRTC or another protocol means juggling multiple priorities and assessing stream resiliency on both the contribution and distribution ends. 艾伦·麦克伦南主席， 2G Digital Post Optimization, discusses these issues with Ryan Jespersen, Director of Product Strategy, 杜比.io和老埃文·斯塔顿. Principal Solutions Architect, M&E, AWS，在这个剪辑中 流媒体连接.
麦克伦南问杰斯珀森, “What technologies are you using to help develop [very low latencies] within 杜比?”
Jespersen says that when the Adobe Flash player was phased out as a distribution delivery system, “It left this huge gap in the industry for things that we had become accustomed to, which is about five-second glass-to-glass latency with RTMP delivery to the Flash player.“然而, he also does not believe that WebRTC is becoming a “de facto standard” overall but that it is more of a standard for specific use cases. “If you don't care about data resiliency, meaning you don't care if there are some packets that are dropped both on contribution and on distribution, then WebRTC is probably the best thing for you,他说. “If you're trying to deliver something that truly is as close to zero glass-to-glass latency because everything you're doing by default is over User Datagram Protocol (UDP).”
Jespersen breaks the situation down into two core discussions: the contribution side and the distribution side. “[On the] contribution side of things where most people do care about there being some resiliency…we developed WebRTC and added the WebRTC HTTP Ingestion Protocol (WHIP) standardization so that we could deliver on a contribution side over UDP by default. The second piece of that is you've actually seen the mass adoption of that with what's happened with 奥林匹克广播服务公司工作室.”
On the distribution side, Jespersen says, “If you're trying to get under a second, there is nothing. I don't care what anyone says, there's nothing in the HTTP world or in the Transmission Control Protocol (TCP) world that is delivering anything resiliently in production under a second. 和 亚马逊静脉注射 是一个伟大的产品. THEOlive 是一个了不起的产品. There are some amazing products out there, but they're not getting under a second. So if you're trying to do something that's truly glass-to-glass under that, the only thing to do is to default back to UDP and default back to a protocol that's built on that, 哪个是WebRTC.”
However, Statton makes a key correction about a recent update. “Ryan, thank you for saying all that,” he tells Jespersen. “One minor correction about IVS. They just launched WebRTC support just a few weeks ago, so now they're down under a second. But only for the reasons that you said.”
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