Progress report: Upon adding the 3rd video track, the call to DelayBasedBwe::IncomingPacketFeedbackVector is triggering the delayed_feedback code path here[1], which then halves the estimated bandwidth here[2]. [1] https://searchfox.org/mozilla-central/rev/e84baf5c730abd453be5d50dcb0aba1e743bac47/third_party/libwebrtc/webrtc/modules/congestion_controller/delay_based_bwe.cc#157-161 [2] https://searchfox.org/mozilla-central/rev/e84baf5c730abd453be5d50dcb0aba1e743bac47/third_party/libwebrtc/webrtc/modules/congestion_controller/delay_based_bwe.cc#176
Bug 1690832 Comment 18 Edit History
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Progress report: Upon adding the 3rd video track, the call to DelayBasedBwe::IncomingPacketFeedbackVector is triggering the delayed_feedback code path here[1], which then halves the estimated bandwidth here[2]. This pattern (5 calls in a row with delayed_feedback) continues permanently from this point forward. [1] https://searchfox.org/mozilla-central/rev/e84baf5c730abd453be5d50dcb0aba1e743bac47/third_party/libwebrtc/webrtc/modules/congestion_controller/delay_based_bwe.cc#157-161 [2] https://searchfox.org/mozilla-central/rev/e84baf5c730abd453be5d50dcb0aba1e743bac47/third_party/libwebrtc/webrtc/modules/congestion_controller/delay_based_bwe.cc#176