Search Engine Watch has a great article on the burgeoning field of Video/Audio search:

“Video search is still difficult to use right now,” said Peter Chane, Senior Business Product Manager at Google. “You often can’ t find the video you want. Playing back videos can be a little weird—you can have problems hearing audio with video. And many files might not be Mac-compatible.”

Still, many search engines offer video searching capabilities, including Google Video, Yahoo Video, Singingfish and Blinkx.

The number of places allowing you to upload audio/video has exploded and now the problem is finding the content that you want. [via Smart Mobs]