Microsoft Edge Origin Trials Developer Console
Safely experiment for a fixed period of time and provide feedback on new platform features with Microsoft Edge origin trials
Microsoft PARAKEET Polyfill Testing
Protocol Launch Timing Extension to PerformanceNavigationTiming
To help web applications compute end-to-end telemetry for protocol launches we propose adding 2 new fields userAgentStart and protocolLaunchStart to the PerformanceNavigationTiming object. The parameter userAgentStart corresponds to a timestamp captured early in the startup of the browser application. The parameter protocolLaunchStart corresponds to the time when user action that initiated the protocol launch in the non-browser client application. For cold starts; when no browser process has yet been created; the protocolLaunchStart value will be lesser than the userAgentStart value. For warm starts; where one or more browser processes are already running; the protocolLaunchStart value may be higher than the userAgentStart value. These new fields are only populated for protocol launches.
xHE-AAC Support for Edge on Windows
The MsMediaFoundationXHeAac origin trial allows web sites to use MediaSource.isTypeSupported to query the supportability of xHE-AAC audio mimeType by the user agent. If xHE-AAC audio decoding is supported, the user agent can only support the playback of xHE-AAC encoded audio through the MSE/EME protected media path.