Found this on Youtube -
The old, cheap Aiptek camera, discussed in replies #14 & 15 above, is 60 fps at 720 and does not have high speed video. But in bright sunlight the Auto exposure control selects a faster shutter speed and the motion blur allows considerable stroke analysis. Do you want to tape matches or tennis strokes, both?
Smartphone cameras have AUTO exposure control for video that selects fast shutter speeds in bright light = sharp images.
Have you tried your camera in direct sunlight to see if AUTO selects a fast shutter speed and reduces motion blur?