Patent ID: 7668866

Claim:
A method of distributing audio visual content in a file in a downloadable file format to a non-MPEG-4 compatible receiver so that the receiver can identify whether a media stream in a received file is unrestricted or is intellectual property management and protection controlled, wherein the file includes alternative format identifier control data that is used instead of MPEG-4 system information when the media stream is intellectual property management and protection controlled, comprising: separating data in the file into a control data box and a content data box; embedding data required for intellectual property management and protection initialization in a first box rendered in the control data box; and embedding data required to interpret intellectual property management and protection and related parameters in a second box rendered in the control data box, wherein the data required for intellectual property management and protection initialization embedded in the first box includes an intellectual property management and protection Tool List which conveys a list of tools required to access streams in the received file, an intellectual property management and protection Descriptor which describes a required intellectual property management protection, and Usage Rights which designate a number of times the content can be played.