Simulcast in WebRTC allows a single video source, like a camera or screen share, to be encoded at multiple quality levels and sent simultaneously, which is beneficial for subscribers with varying network conditions and device capabilities. The video source is encoded into multiple streams, each identified by RIDs (RTP Stream Identifiers) for different quality levels, such as low, medium, and high. These simulcast streams are described in the SDP you send to Cloudflare Realtime SFU. It's the responsibility of the Cloudflare Realtime SFU to ensure that the appropriate quality stream is delivered to each subscriber based on their network conditions and device capabilities.
0 commit comments