At our church (broadwaychristian.org), we put in Boxcaster’s hardware and streaming solution and have been quite pleased. It’s not the cheapest solution by any means, but it’s dead simple and super reliable, which was key for us since we usually have very non-technical people running sound and lyrics. We have an HD camera plugged into the BoxCast via HDMI, an audio feed plugged in from the sound board, and it just automatically starts streaming 10 minutes before the service starts (set up on a recurring schedule), and stops well beyond the normal end time. It’s pretty much set it and forget it. We have done almost zero to it since deployment. The receptionist in the office even figured out how to go into the web interface and set up a special event for a wedding and send the (private) link to the bride in advance. Again, no special setup required beyond turning on the camera and sound board.
I’ll say that we’re blessed to have Frontier FiOS in town, so upstream bandwidth isn’t an issue, even though we’re on the cheapest plan and do minimal traffic shaping.
If you have upstream bandwidth limitations, you’ll want to be sure you’ve appropriately accounted for that before you start buying hardware and testing this out, because no solution will work well without sufficient bandwidth.