Calculate Mile Per Hour from Video

Having just played a tournament match with a big-hitting young guy, I found another use for my tennis video, and any camera will work if you know the frames per second. Namely, you can calculate the mph of any ball by first determining the point of contact when the racket first hits the ball, and then some other point of reference (i.e., the ball hits the net, that’s 60 feet) and count the number of frames that it took to get from one point to the next. Divide the number of frames by the the frame rate (which is 30 in the case of the VADO) to get the actual time elapsed, and knowing the distance, you can calculate the speed in feet per second. Google the conversion from feet per second to mph is easy, though a conversion factor of .68 times feet per second gets you close to miles per hour. In my case, my opponent was hitting first serves between 103 to 118 mph.  And really, unfortunately, many of them were in the corners.

At least, that’s my story and I’m sticking to it!

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1-minute How-To Video: Mounting the QM-1 Portable Camera Mount

Coaches, Parents and Players

Improve your strokes, play smarter and win more tennis matches. Players practically coach themselves into playing better as they see for themselves what’s really happening! With tennis video instruction, a picture is truly worth a thousand words!

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Why the QM-1

  1. Simple, easy to use Patented design
  2. No assembly required – ever!
  3. Rugged – built to last a lifetime
  4. Lightweight AND it fits easily in bag
  5. Mounts in seconds to see the WHOLE court
  6. One full year satisfaction guarantee!

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