It appears that the spec for EME doesn't provide a mechanism to reliably detect decryption failure, this will be inconvenient to end users. This could be allev

It appears that the spec for EME doesn't provide a mechanism to reliably detect decryption failure, this will be inconvenient to end users. This could be alleviated by adding a mandatory tag that includes a hash of the decrypted video for verification purposes, to be tested by the client while streaming the content. If the hash is missing or incorrect the media must not play. The Tiger Tree Hash system is already being deployed for this purpose in other systems.