MediaStoreSourceTags

Caller tags on the media store’s TAMS view: the application’s own identity for what it records (owner, stream and input names), set on the group the store keeps for a source name (and program, 1 when unset), or on one stream key. A tag value is a list of strings; one value serves as a plain string, several as an array, and an empty list removes the name. Names given are set, others kept. Names under "_" or "_norsk" and the engine’s own bare names (language, flow_status, …​) are refused. Tags may be set before the first frame of the source arrives, and are persisted with the store.