MediaKeysRequirement

Open Beta Documentation Amazon offers this technical documentation as part of a pre-release, open beta. The features described might change as Amazon receives feedback and iterates on the features. For the most current feature information, see the Release Notes.

MediaKeysRequirement: "required" | "optional" | "not-allowed"

required:

 When used in a call to requestMediaKeySystemAccess(),
     the returned object must support this feature.
  When returned by a MediaKeySystemAccess object,
 CDM instances created by the object may use this feature.

optional:

 When used in a call to requestMediaKeySystemAccess(),
     the returned object may support and use this feature.
 When returned by a MediaKeySystemAccess object,
     this value cannot and must not be present in such an object.

not-allowed:

 When used in a call to requestMediaKeySystemAccess(),
     the returned object must function without using this feature and must not use it at any time.
 When returned by a MediaKeySystemAccess object
     CDM instances created by the object must not use this feature.

For more information, see https://www.w3.org/TR/encrypted-media/#dom-mediakeysrequirement.

Last updated: Sep 30, 2025