Controlling the generation of SSRC from outside

[FizikRoot]

Description

Control ssrc from outside of webrtc module

Reference issue

Fixes #...

[Sean-Der]

Hi @FizikRoot

thanks for the contribution! What problem are you trying to solve?

We won’t be able to store SSRC on the TrackLocal unfortunately. They will need to be per RTPSender. Not against providing a hook for this, I just don’t want to break other stuff.

Maybe using ORTC might be better here?

[FizikRoot]

We have 2 cases:

1. Dynamic rerouting of rtp traffic in backend, if one of the servers dies we would like not to change the ssrc
2. We have parallel mcu and sfu system for audio. And for correct using mcu we need to know ssrc. Either use a hack to get the generated new srss after installing the messaging

[Sean-Der]

Both super cool use cases! Yea we need this.

ok let me look at API tonight. This needs to be on RTPSender. If that doesn’t work we will add SettingEngine.SSRCGenerator

[lamhai1401]

Hi @Sean-Der, could you please provide information on this issue? My use case is as follows, and I would like to modify the SSRC number

[Sean-Der]

This is now available! Sorry for the delay @FizikRoot @lamhai1401

See here for a test that sets the SSRC to 5000 explicitly.