Yahoo! is said to be close to buying video streaming start-up RayV, according to a report by the Wall Street Journal. The company is reportedly interested in acquiring RayV to bolster its video service, as the start-up develops software for high definition online video streaming. In addition, RayV offers a content distribution network, a content management system and digital rights management function, according to the Journal. RayV's Web site says it has "developed a unique suite of patented technologies and a new approach to video streaming." It's based in Los Angeles with research and development operations in Tel Aviv.