Here is a list of articles related to video streaming which you might find useful

• Comments on the Wowza Streaming Engine® Server Side API
• Debugging your Wowza Module from Eclipse
• Hello Wowza - Module Dev Tutorial
• Logging Player Counts to Database

Wrench Related Articles

• Tracking publisher and player time in Wowza with Wrench
• Step-by-Step Wrench Setup Guide
• Web Service Based Authentication / Authorization
• Stream Access Control
• Video Chat / Streaming-as-a-Service Website
• User Authentication for Wowza Streaming Engine®
• How does Wrench authentication and authorization work?
• Dynamic Pay-per-minute Balance Checking
• Forbidding Concurrent Stream Playing
• Simple pay-per-minute solution for Wowza