Safari 11 for iOS 11 and macOS 10.13 is supported on the OpenTok platform. Also, Safari 11 is supported for those who are running macOS 10.12 and 10.11.
This is the first implementation of WebRTC by Apple, and Safari is not 100% compatible with existing implementations from other WebRTC vendors. In particular, Apple has decided to focus exclusively on the H.264 video codec and as such does not support the VP8 video codec. This means that devices and endpoints that do not have H.264 video codec support will not be able to use video communication with Safari 11 automatically.
To mitigate this interoperability challenge, we are adding Safari projects to the Account Portal to allow you to create Safari-centric projects that use the H.264 codec.
For more details, please visit our developer center documentation.