This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
JMF (Java Multimedia Framework) provides very limited functionality around this sort of thing. I'd personally recommend finding an existing tool to perform this conversion. You may find some help in this thread.