Recording Placeholder [GL ARC]

If an Enterprise MAM Solution connects to video servers for recording assets or some other type of scheduled asset ingest, it often is necessary to create recording placeholders. Recording placeholder store information on a recording which is going to happen at a later time - but no assets, yet.

To ensure a consistent behaviour of all applications in an Enterprise MAM Solution, the follow metadata fields are pre-defined:

Metadata Field	Allow Values / Type	Meaning
`V3_RecordingStart`	datetime as ISO-8601 timestamp	planned start of recording
`V3_RecordingEnd`	datetime as ISO-8601 timestamp	planned end of recording
`V3_RecordingSource`	VidiCore dataset enum that contains all router crosspoint sources (key=technical ID in MediaIngest, value=display name)	crosspoint source used for the recording
`V3_RecordingDestination`	VidiCore dataset enum for possible crosspoint destinations	crosspoint destination used for the recording
`V3_RecordingGroup`	VidiCore dataset enum that contains group definitions for router sources and destinations (key=technical ID in MediaIngest, value=display name)
`V3_RecordingState`	VidiCore enum with possible recording states: `CREATED`: placeholder has been created in VidiCore `PLANNED`: placeholder has been synchronized to MediaIngest `PROCESSING`: MediaIngest has started to record for this placeholder `DONE`: MediaIngest has finished successfully `FAILED`: Failure during processing by MediaIngest	existence of `V3_RecordingState` marks an item as Recording Placeholder