Closed okyanusoz closed 6 days ago
Sorry I didn't solve this sooner @okyanusoz!
pion/webrtc@v4 enables Simulcast by default. Pion uses different default values for extension headers. This meant that Pion was sending packets with invalid receiever feedback and breaking FireFox's bandwidth estimation
I'm not sure where to file this bug, so I'm filing it here.
If you try running the sfu-ws sample here and change it to use Pion WebRTC v4 instead: import ( //... "github.com/pion/webrtc/v4" )
It will work on Chrome, but not Firefox. Specifically, it works with 2 participants but not more for some reason. It worked with v3.
Your environment.
What did you do?
Try using Pion WebRTC v4 with sfu-ws or any other SFU-like app.
What did you expect?
I expected 3 participants to work. Instead, one participant successfully connect, but others just freeze or slow down significantly.
What happened?
Taking a look at about:webrtc-internals shows this:
As you can see, only one participant is able to both send and receive VP8 when we have 3 participants.
A full report from a peer who froze is below: debug.json
Thanks!