Anyone wanting to stream YouTube videos through a Chromecast currently has to visit YouTube's website or run one of its mobile apps. Viewers may soon have more options, though, as Google has confirmed to GigaOM that it's publicly testing Chromecast support for embedded YouTube clips on third-party web pages. Right now, access is random at best -- the "send to" button only appears some of the time, and might not be available to everyone. The company says it's monitoring feedback from these experiments, however, and it could offer embedded video support to more Chromecast owners if all goes well.