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4                                             Video processing and storage


            (11)    The SCU forwards the request to the MDU.

            (12)    The MDU returns the metadata address to the SCU.
            (13)    The SCU transfers the metadata address to the CSAU.

            (14)    After  receiving  the  metadata  address,  the  CSAU  requests  the  MDU  to  start  transmitting  the
                    metadata.

            (15)    The MDU sends a request to the IPU for the video metadata or image metadata.
            (16)    The IPU creates a media channel with the MDU and sends the metadata to the MDU.

            (17)    The MDU transfers the metadata to the CSAU.
            (18)    The CSAU transfers the metadata to the CSDU to store it in the cloud data nodes.
            (19)    When the storage plan is completed, the CU sends a stop request to the CSAU.

            (20)    The CSAU transfers this stop request to the MDU.
            (21)    The MDU returns a response to the CSAU.

            (22)    The CSAU requests the SCU to disconnect.
            (23)    The SCU returns a response to end this metadata storage.

            7.4.5   Media acquisition from the cloud storage system

            When a user wants to view the media stored in a cloud storage system, the CU initiates a request to the SCU
            in order to acquire the media.





































                                Figure 7-7 – High-level procedural flows for media acquisition











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