1482163 - excessive bitrate when setting track.enabled to false with simulcast

Status: RESOLVED DUPLICATE of bug 1735951

(Core :: WebRTC: Networking, defect, P3)

Description

[Philipp Hancke [:fippo]]

steps to reproduce:
1) go to https://fippo.github.io/simulcast-playground/firefox
2) wait a few seconds until the receiving bitrate is shown
3) document.querySelector("video").srcObject.getTracks()[0].enabled = false

The bitrate goes to ~1.3mbps (probably from the table?). In wireshark one can see this is all padding. This is a known issue in Chrome: https://bugs.chromium.org/p/webrtc/issues/detail?id=5727

Using pc1.getSenders()[0].replaceTrack(null) to detach the camera seems to workaround quite will but will be against the spirit of https://blog.mozilla.org/webrtc/better-privacy-on-camera-mute-in-firefox-60/

Comment 1

[Andreas Pehrson [:pehrsons]]

There is more information on this in bug 1735951.