An anonymous reader writes: Non-profit public interest group Public Knowledge has filed a complaint with the Federal Communications Commission regarding Comcast's Stream TV service. The complaint says that Comcast excludes Stream TV traffic from its own data cap, which is both a violation of its merger agreement and counter to the FCC's Open Internet rules. Stream TV is a $15 per month offering for Xfinity internet customers. It includes local channels, some basic cable, HBO, and the use of a cloud DVR. Most content is streamed over the home network. Public Knowledge's senior staff attorney, John Bergmayer says, "Comcast's actions could result in fewer online video choices for viewers nationwide, while increasing its dominance as a video gatekeeper. If its behavior persists, prices will go up, the number of choices will go down, creators will have a harder time reaching an audience, and viewers will have a harder time accessing diverse and independent programming."