Be sure to add "cupertinostreamingpacketizer" to /Streams /LiveStreamPacketizers
Can you clarify what you mean by out of sync? How out of sync? Does it drift out of sync over time and is back in sync if you stop playing and start again? What player are using to playback the stream? Is the stream out of sync when played back using Wowza Server?
What is the key frame interval set to? If it is very long that might be a problem. Try adding this Property to the Application.xml /Streams /Properties list:
Try different settings in the encoder. Yesterday another user found that changing to 24fps video fixed audio sync issue. We don't think that is a fix-all in other situations necessarily, but changing audio and video details is where I would start.