Blinkx, whose technology lets people search for videos hosted elsewhere on the Internet, is making it possible for other Web sites to incorporate its search results and share any resulting revenue. Through a program called Red Label, the company is opening its application programming interface (API) so other sites can pipe video search queries to Blinkx, retrieve the results, and publish them. Blinkx searches videos not just by examining textual metadata such as titles, tags, and descriptions that accompany videos, but also by performing speech recognition to convert audio to text and by visual recognition that can recognize text and some famous faces in the videos themselves.