Thanks for filing. We chatted, so just posting for other readers:

All "true" are only returned when we have no data and know we at least can decode the described stream. This is WAI, but we can do a little better in the cases where we have some adjacent data for similar fps/resolution. 

In general I expect the DB to be quickly populated (will take a look at the metrics to confirm). When we don't have data, being optimistic will give us a chance to learn the performance and likely gives the same experience (for better or worse) that folks are currently getting.