I have an hls stream that I'm trying to play using wowzaplaystart and wowzaplayduration. If wowzaplaystart is 0 then the stream starts pretty quickly, if wowzaplaystart is bigger (say 60000) then the stream doesn't start playing for about 20 seconds. This is using 3.0.5. Is it possibly the case that the client doesn't see a MOOV atom? How can I debug this?