- From: Bernard Aboba via GitHub <sysbot+gh@w3.org>
- Date: Thu, 01 Aug 2019 21:12:35 +0000
- To: public-webrtc@w3.org
aboba has just created a new issue for https://github.com/w3c/webrtc-pc: == degradationPreference is under-specified == `degradationPreference` appears to have been implemented differently between browsers. While [the WPT test](https://github.com/web-platform-tests/wpt/blob/master/webrtc/RTCRtpParameters-degradationPreference.html) covers some basic aspects of its operation, it doesn't test what effect this has on the media encoding. Currently Section 5.2.2 says: "When bandwidth is constrained and the `RTCRtpSender` needs to choose between degrading resolution or degrading framerate, `degradationPreference` indicates which is preferred." In the current Edge implementation, `degradationPreference` is interpreted as providing a content-hint to the encoder, allowing it to differentiate between applications desiring a bias toward "detail" or "motion" (in content-hints terminology). However understanding is that other browsers don't implement `degradationPreference` this way. Please view or discuss this issue at https://github.com/w3c/webrtc-pc/issues/2248 using your GitHub account
Received on Thursday, 1 August 2019 21:12:37 UTC