SVC and Low-Latency Video Conferencing
Learn more about streaming latency at 流媒体东部2022.
Read the complete transcript of this clip:
安迪·霍华德: In terms of video conferencing solutions, they typically do not use webRTC, except when you're trying to interact with between two competing things, like if you're in a WebEx video conferencing room and you're trying to join a Teams room, it'll typically use webRTC to make that translation. 变焦, 例如, uses scalable video coding [SVC], which is kind of like adaptive bitrate streaming where there's different layers in the video and, based on the bandwidth and the CPU and things like that, it'll drop down to a lower level based on what you have available to you. But it's also extremely low latency, because that's always been a consideration for videoconferencing providers.
蒂姆Siglin: SVC was one of those things that came along shortly after H.264 moved into the streaming world. I I'd used it in video conferencing for years before I moved into streaming. SVC had a really good idea, but it never took off. 其中一部分是H.265就在地平线上. 也许我们会得到H.265 and it'll do things better for us. 但这是一个很好的提醒, 安迪, that SVC is one of those things that works really well when it comes to things like this, 哪里需要双向的. And, as Ryan was saying, we need to prioritize time of equality.
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