Receiver apparatus for mpeg-4ipmp extended isma media stream
A receiving device and media stream technology, applied in the field of MPEG-4IPMP extension, can solve the problems of incompleteness, hindering interoperability with MPEG-4IPMP extension interchangeable receiver, etc., and achieve the effect of flexible realization
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[0052] IPMP extended signaling
[0053] The current ISMACryp corresponds to SDP IOD signaling for ISMA-specific and MPEG receivers. Although the ISMA dedicated receiver only accepts the SDPFMTP signaling parameters, the flow of the SDP IOD is protected by ISMACryp (minimum IPMP signaling), and signaling must be made for any MPEG receiver. KMS can signal ISMACryp using only IPMP signaling (basic IPMP signaling) within the SDP IOD.
[0054] In this specification, syntax compatible with MPEG-4IPMP extension is provided. ISMACryp can easily achieve compatibility with MPEG-4 IPMP extensions with minimal effort, and also provides flexible protection schemes.
[0055] Minimum IPMP-X signaling
[0056] IPMP extension, specifies the IPMP tool list (tool list) descriptor in the IOD. The Tool List Descriptor identifies the list of IPMP tools necessary for the flow sequence that will appear later. According to the MPEG-4 IPMP extension, when IPMP protection is present, a Toollist Des...
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