Re: maxHeight and maxWidth

On Feb 13, 2016, at 5:01 PM, Adam Roach <adam@nostrum.com<mailto:adam@nostrum.com>> wrote:

[BA] The major flaw of cloning is the potential for simulcast streams to converge.  That flaw was addressed in RTCRtpEncodingParameters by introducing resolutionScaleDownBy - to ensure the streams remain distinct.

  1.  Bad interaction with congestion control
  2.  Suboptimal browser performance, and
  3.  incompatibility with scalable coding.
  4.   "@@@" above

#1 and #4 (convergence) are symptoms of the same underlying problem - lack of a well defined response to congestion.

The important thing to understand is that these problems are *not* inherent properties of track cloning - they arise because cloning by itself doesn't provide browsers with the information needed to decide how to react to congestion.