Re: [webrtc-pc] Clarify what happens to codecs when rolling back (#2368)

> Remembering that a payload type, once assigned, can't be reassigned - what's the scenario that you envision?

Is there not a difference between a payload type that is on offer, pending approval, and it having been assigned in a stable offer? Imagine the following:

```
pc1: SLD(offer) where PT 101 maps to VP9
pc1: Rollback due to receiving a remote offer
pc2: SRD(offer) where PT 101 maps to H264
pc1 needs to be able to accept pc2's offer... pc2 does not know anything about the rolled back offer
```

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Received on Monday, 25 November 2019 14:23:52 UTC