Jerky nature explanation -
We have decided to place our cameras in an unobtrusive (and non-distracting) place by mounting the camera on the ceiling, directly behind where the curtain opens into the cultural hall. We have wired our building so that there is a drop for the control cable and the video cable directly at that spot. Because of the distance, the optical zoom on the D70 has to be pushed pretty far up, and so the slightest movement is accentuated which makes for the "jerky" feeling that I was describing in a previous post. When adjusting the camera, the software I've created allows for the slowest pan possible with the camera (speed 1) and unfortunately there is no ramp up/down speed to make the pan very smooth. It just starts moving and abruptly stops when you release it from the pan. It is a bit distracting. I also have a feature that allows you to move the camera head one increment at a time, allowing for very fine adjustment after the camera is in a good general position using the pan buttons. Again, this causes the camera to jerk in small increments and the picture to jiggle a bit from the small momentum of the camera head. We have two cameras to get around this, but it would not be a requirement if you are OK with the slight jerk, or if you are mostly using the camera for 2 views (speaker, choir shots) and the view change would only occur during normal breaks anyway.
I have considered pushing my camera controller work out as an open source project, or continuing my work and providing the basic version for free to church units. I haven't decided what to do with it. If anyone wants to give it a try to see if it might work for them, I'm willing to send you a copy to play with, if that seems appropriate. Right now I've added features as we have needed them for for stake conferences and concerts that our group does. It has ability to do brightness, pan (with speed adjustment), 'nudge' movement for slight increment tweaks, set/restore saved positions, autofocus on/off, and zoom. I'm looking to add additional features for manual focus and certain lighting settings that may come in handy, along with infinite saved positions. I have found that it would be nice to have a walk-in shot of the chapel, a rostrum shot (for use when switching speakers), a close in speaker shot, a wider speaker shot, a choir shot, a chorister shot (for the congregational hymn), and a presidency shot (for use during the sustainings). This is more complex than stakes need, but those of us involved are also part of an audio visual company so we end up doing a bit extra.
This ended up being a much longer answer than I expected, but I hope that it helps people out there.