OptionalpruneOptionally drop retained frames that end before startTime.
Implementing this lets writable sources apply a retention window without reloading and rewriting the frames they keep. Stores that omit it fall back to a reload-and-replace rewrite.
Optionaldestroy
Cold semantic detection storage.
Stores validated detection frames outside the active render path. Browser implementations may use IndexedDB; memory implementations are useful for tests, demos, and ephemeral streams.