http://www.vanheusden.com/setpwc/

setpwc v1.2, (C) 2003-2006 by folkert@vanheusden.com

-d device  device to use (default: /dev/video0)
-p         dump current settings
-f x       set framerate (0...63)
-S w,h,x   set width/height/framerate
-b         store settings in nonvolatile RAM
-r         restore settings from nonvolatile RAM
-x         restore factory settings
-c x       set compression preference (0-3)
-g x       set automatic gain control (0...65535)
-s x       set shutter speed (1...65535)
-w auto/manual/indoor/outdoor/fl
           set automatic white balance mode
-a x       red-balance (only if -w manual) (0...65535)
-e x       blue-balance (idem) (0...65535)
-i x       speed of automatic white balance (1...65535)
-j x       delay for automatic white balance (1...65535)
-k x       set led on-time (0...25500ms
-l x       set led off-time
-m x       set electronic sharpness (0...65535)
-n x       set backlight compensation (0=0ff, other=on)
-o x       set antiflicker mode (0=0ff, other=on)
-q x       set noise reduction mode (0=none...3=high)
-t x       reset pan(bit 0) and/or tilt(bit 1)
-u         query pan/tilt status
-y x       set pan position
-z x       set tilt position
-h         this help

With this tool, you can only set settings specific to the
Philips WebCams.