Some quickie hacks for Dave's Demo. Allow specification of a specific
camera, as well as its width, height, and fps. Tack these params onto the robotrack URL: &camwidth=640&camheight=480&fps=2&camera=1 where camera is 0, 1, or 2 ... Dave can figure out which one he needs. The allowed camera sizes are: 640x480, 640x360, 480x360, 384x288, 352x288, 352x240, 320x240, 240x180 as defined by the axis HTTP API.
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