SVC stands for Scalable Video Coding.
SVC is a technique that allows encoding a video stream once in multiple layers. The layers in SVC are akin to the layers in an onion – they can be “pealed off” while maintaining the video, reducing its quality with the reduction of each layer.
This mechanism is useful when:
SVC is added as part of the VP9 codec implementation in WebRTC.
Make sure you also read about simulcast.
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