YouTube has opened API as most Flash/Flex developer knew. Call YouTube API could convenient to play YouTube flv in you own applications. But if without YouTube API, we could also do it? Then following tutorial has very detail instruction and teach you how to do it step by step.
YouTube is a video sharing website where users can upload, view and share video clips. YouTube was created in February 2005 by three former PayPal employees. The San Bruno-based service uses Adobe Flash Video technology to display a wide variety of user-generated video content, including movie clips, TV clips and music videos, as well as amateur content such as videoblogging and short original videos. In October 2006, Google Inc. announced that it had reached a deal to acquire the company for US$1.65 billion in Google stock. The deal closed on November 13, 2006.