The present invention discloses a scalable video format conversion system for utilizing various system resources to provide a progressive video signal. The keys in the file can be tested sequentially. The system includes a pattern data store that holds data associated with converting a synchronous method call to an asynchronous method call, which facilitates employing the system consistently across environments like file inputoutput, stream inputoutput, socket inputoutput, networking, remoting channels, proxies, web forms, web services and messaging message queues.