This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
msGraphicsTrustStatus is a read-only property which returns an object containing information on protected video playback.
This proprietary property is specific to Internet Explorer and Microsoft Edge.
status = object.msGraphicsTrustStatus;
//Specifies the output device id that the audio will be sent to. msAudioDeviceType: string; readonly msGraphicsTrustStatus: MSGraphicsTrust;