The label said "without length" but the count held only live videos, so a video not fetched yet, or gone before it was, was left out of the sum and named nowhere. The server's `Video.without_length` and the client's `isWithoutLength` are now one rule (no length, whatever the live status), and the field, the key and the helpers are named for what they count. The comments that still quoted "+N live" say the current copy.