https://webrtc.googlesource.com/src.git/+/d3070f43b19f503246be4ebad425d87568a71ce0 appears to be the cause of the regression. It was later reverted (https://webrtc.googlesource.com/src.git/+/3bb1194fff251bb63062aa1a807ee7107779f36b), but I guess that wasn't backported to branches 65 and 66.
Forcing rtc_use_h264 to true in the build flags should do the trick.
https:/ /webrtc. googlesource. com/src. git/+/d3070f43b 19f503246be4eba d425d87568a71ce 0 appears to be the cause of the regression. It was later reverted (https:/ /webrtc. googlesource. com/src. git/+/3bb1194ff f251bb63062aa1a 807ee7107779f36 b), but I guess that wasn't backported to branches 65 and 66.
Forcing rtc_use_h264 to true in the build flags should do the trick.