VMaslov covered most of the answers. Here's a little extra info:
There are tripod adapters for Kinect that work well. This one is very similar to what I use:
Monprice Kinect Wall MountAll you need is the front part that attaches to the Kinect. You can discard the rest.
For my PS3 Eye cameras, I modified the base to accept a tripod screw. If you peel away the label, you'll find a hole in the base, which can be tapped. Then, you use a Helicoil kit to insert threads that work with a standard tripod mount. I made a video a few years ago that shows how to do this but I keep forgetting to post it. I'll try to get it online this weekend.
IMO, dual or triple Kinect is much easier to use and the results are generally quite good. Dual can get a little flakey is there is occlusion, so you'll need to adjust your performance to favor the device POV. I usually shoot at 90 degrees because I think the motion is more stable but sometimes you'll need the near 180 setup depending on the action you want to capture. I haven't worked with the triple Kinect setup much yet--plan to do so as soon as we finish our current 2D film production and get back to working on 'B2'.
If you need your motions to cover a lot of ground, PS3 Eye is definitely the way to go. Be warned that setup is a lot more involved though, and there are special lighting and special clothing requirements. I only use this configuration when absolutely necessary because of the setup and space issues. Directional shadows are to be avoided so lighting needs to be fairly even and flat. I use a couple softboxes to light the environment, which projects almost no shadows when used properly. Some users shoot outdoors on overcast days or very early in the morning to avoid hard shadows.
Kinect, on the other hand, is practically 'plug-and-play', which works well in our small studio. Normal fitting slacks and shirt is all that's required for Kinect capture. The one lighting issue with Kinect you need to be aware of is that you want to avoid IR pollution from the outdoor sun. If you're shooting during the days in a room with a lot of windows, you'll want to cover the windows. With Kinect, the actor's feet tends to get subtracted, which can cause feet tracking issue. If you run into this, you can minimize the problem by wearing shoes or boots that give your feet more volume and height. (The bulky hiking shoes I wear during capture really help a lot.)
Regarding extension cables, be sure to get repeater cables, also known as active USB cables--these are powered USB cables that can send stable data streams over great distances. Regular USB extension cables will not perform satisfactorily. Also, be sure to get one for your Bluetooth device--the controllers are more reliable with the device is closer to the capture space.
Finally, avoid shiny surfaces, like polished floors, glass cabinets, computer or tv screens. Reflective surfaces affect both PS3 Eye and Kinect devices. If the floor is shiny, you'll probably want to roll out a carpet to cover the ground under the performer.
Hope this helps.
G.
