For Representations based on ISO/IEC 14496-12, the following URI is defined to indicate protection
schemes identified by the Scheme Type within the Scheme Type Box of the Protection Scheme
Information Box of the file:
urn:mpeg:dash:mp4protection:2011
In this scheme, the value attribute shall present and shall be the 4CC contained in the Scheme Type
Box, suitably percent-encoded according to IETF RFC 8141, and may include the version number. The
4CC and the version number, if present, shall be separated by a ":". The version number shall be encoded
as up to 8 hexadecimal digits, where the leading '0's may be omitted.
5.8.5.2.2 The MP4 Protection Scheme
For Representations based on ISO/IEC 14496-12, the following URI is defined to indicate protection schemes identified by the Scheme Type within the Scheme Type Box of the Protection Scheme Information Box of the file: urn:mpeg:dash:mp4protection:2011 In this scheme, the
valueattribute shall present and shall be the 4CC contained in the Scheme Type Box, suitably percent-encoded according to IETF RFC 8141, and may include the version number. The 4CC and the version number, if present, shall be separated by a ":". The version number shall be encoded as up to 8 hexadecimal digits, where the leading '0's may be omitted.