TvHeadend is a TV streaming server for Linux that supports DVB-S, DVB-S2, DVB-C, DVB-T, ATSC, IPTV, and V4L for input. Adam Sutton, one of the lead developers of TvHeadend, wrote in a news post that things haven't been working out as expected ever since they opened up the code-base. Adam wrote, "My intention when I approach Andreas about opening up the Tvheadend code base and turning it into a fully fledged community project is that it would become exactly that. Although Tvheadend is officially a community project and several of you have commit access to the repo, most of the input over the past 12-18 months has been from me. While I really enjoy doing this, it's simply becoming too much to sustain (on my own) and the extra input I'd hoped would materialise from new users etc... has not happened."
Adam's contributions to the project have dropped off and he says "the level of input I'm likely to be able to put in is likely to diminish further. But I really don't want to see Tvheadend die, I think Andreas built a great system and I hope that I've been able to add some useful improvements. Personally I still think its the best route to a decent XBMC+PVR solution."
Adam ended his note with, "I'm hoping this message will act as a bit of a rallying cry and that people that might have stood back up to now, in the believe that there was nothing to do or that help would not be wanted, might step forward and start looking into areas of the code that interest them. And even if you're not a proficient coder, there are always tasks that can be done, like helping with support forums, keeping on top of issues/feature requests, documentation, etc..."
There's also this related thread to TvHeadend's state on the XBMC.org forums.
TvHeadend is currently licensed under the GNU GPLv3 and its code is available from GitHub or by visiting TvHeadend.org.