WARNs logged on startup that should be INFO
WARNs should be for unusual events that may require attention. These are both parameters that aren't explicitly configured, and as the defaults should be reasonable, they should be INFO not WARN.
2017-02-11 09:43:46,623 | WARN | CM Configuration Updater (ManagedService Update: pid=[org.opencastproject.workflow.handler.textanalyzer.TextAnalysisWorkflowOperationHandler]) | (TextAnalysisWorkflowOperationHandler:528) - Using the default value of 5 frames for the videosegmenter stability threshold
2017-02-11 09:44:01,341 | WARN | CM Configuration Updater (ManagedService Update: pid=[org.opencastproject.external.endpoint.EventsEndpoint]) | (EventsEndpoint:287) - No preview subtype configured, using 'preview'
These have all been fixed through other issues or changes.
iirc, there should be a ticket already for the text analyzer