Re: [webrtc-stats] Correlating RTCInboundRtpStreamStats with simulcast streams (#393)

The issue is about what the receiver knows about the source stream at the SFU.

There are SSRCs received by the SFU, which it may swap and send downstream to the receiving endpoint. i.e., SFU receives A_low and A_high and swaps them in and out when sending it downstream on SSRC B to the received. 

The question is -- can the receiver know (via getStats) which stream is being downstreamed to it A_low or A_high?

visually, you could plot metrics (frameHeight, bitrates, etc) for SSRC A_low, A_high, and B and see which one is being forwarded. 



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Received on Wednesday, 13 March 2019 09:43:41 UTC