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This specification defines a container-independent initialization data format for specifying a list of key ID(s) to the createSession() method defined by the Encrypted Media Extensions.
This type can be used by applications to directly provide information necessary to generate a license request without using media data or constructing container-specific formats.
Unlike other similar specifications, this one does not document a stream format or behavior related to processing media data. This type and format are not used in the Initialization Data encountered.
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The format is a JSON object containing the following member:
See Using base64url.
When passed to the update() method as the Uint8Array response parameter, the JSON string must be encoded in UTF-8 as specified in the Encoding specification [encoding].
Applications may encode the JSON string using the TextEncoder interface [encoding].
This section is non-normative.
The following example will generate a license request for two key ID(s). (Line breaks are for readability only.)
{
"kids":
[
"67ef0gd8pvfd0",
"77ef0gd8pvfd0"
],
}