Patent ID: 8607265

Claim:
A method comprising: inserting a user data identifier (UDI) into a video sequence within a content stream encoded according to a media standard, wherein the media standard defines a syntax that defines a location for a pre-defined data structure, wherein the pre-defined data structure is a variable length data structure and a format of the pre-defined data structure is defined by a value included in the UDI, the UDI being registered with a registration authority that is responsible for registering a format identifier for the content stream, wherein the media standard is an Motion Picture Experts Group (MPEG) standard, and wherein the UDI is different from an Advanced Television Systems Committee (ATSC) standard identifier; and inserting private user data into the video sequence at the location for the pre-defined data structure, wherein the private user data is information, data, or content embedded by a private entity, the video sequence having the UDI and the private user data and being packetized into a transport stream, wherein the UDI is selected to be matched with a pre-defined identifier established by the private entity, wherein the pre-defined identifier is used in the receiving end to allow a decoder to extract the private user data.