After looking into it a bit something like this from Arducam would work well. Plug and play usb and with a free security camera software program you can view both cameras on a laptop simultaneously. So far in researching this stuff there seems to be a field of view (FOV) limitation with the camera that can also focus in on objects that are closer. If you want a FOV that is 90 degrees or above, which is preferable for a corner location in the roundhouse to view all the engine stalls, the focus is limited to objects 1 meter and out. They have a camera that will do a 76 degree FOV and focus on objects just a few inches away.
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