[Chromium](https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/modules/encryptedmedia/media_key_system_media_capability.idl;l=10) and [Webkit](https://searchfox.org/wubkat/source/Source/WebCore/Modules/encryptedmedia/MediaKeySystemMediaCapability.idl#35) both support that already, we should do that as well in order to implement checking scheme per capability.
Bug 1898588 Comment 0 Edit History
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[Chromium](https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/modules/encryptedmedia/media_key_system_media_capability.idl;l=10) and [Webkit](https://searchfox.org/wubkat/source/Source/WebCore/Modules/encryptedmedia/MediaKeySystemMediaCapability.idl#35) both support [encryptionScheme](https://w3c.github.io/encrypted-media/#dom-mediakeysystemmediacapability-encryptionscheme) already. This feature is [disabled](https://searchfox.org/mozilla-central/source/dom/webidl/MediaKeySystemAccess.webidl#23) by default and we're not fully implemented it as well. We should do that as well in order to implement checking scheme per capability.