Affecting pt= and rid= in WebRTC simulcast attributes are no longer supported

Published: | Categories: Audio & Video


Firefox 71 has stopped parsing the legacy pt= and rid= parameters in WebRTC simulcast attributes. The new format supported since Firefox 68 only requires a RID, so, for example,

a=simulcast: send rid=8 recv rid=9

has to be

a=simulcast: send 8 recv 9

Currently, video calls in Google Hangouts Meet are broken due to this change.