The WebRTC getStats API exposes the encoder and decoder implementation names for outbound and inbound video: https://w3c.github.io/webrtc-stats/#dom-rtcoutboundrtpstreamstats-encoderimplementation It will no longer provide the value “unknown” in cases where statistics are queried before a video frame was encoded or decoded. Instead, the dictionary member will be omitted. This follows the general pattern not to return meaningless information described in https://w3c.github.io/webrtc-stats/#guidelines-for-implementing-stats-objects