Hello Brock,
we have done several setups recently where the requirements were to reduce the latency to a lower value than default (one of them on Amazon AWS). Reducing it to ~4 seconds, when using HTTP streaming, involves changes on several components - transcoding (choosing the optimal transcoding profile and adjusting the key frame interval), reducing the size (duration) of streaming chunks, and adjusting the number of chunks being served to the client players. This is a rough overview, but we’d be glad to take a closer look at your setup and help you get the design the completely suits your needs.
Feel free to contact us at wowza@siggdev.com
SiggDev
www.siggdev.com