A:AnswerCheck the specs on your camera, this should be fast enough. A bigger concern is size. Pay more, record longer. But this may not be important, I'm guessing you only want to see what happened two seconds before the wreck.
A:AnswerNot sure on which player or Ripper you are using, but some players require files to be named a specific way AND be located in a particular directory. You’ll have to check your documentation for the particulars. You may have also ripped the files to a format unsupported by your player.
A:AnswerI got the same notification as did you when inserting the memory card into a relatively new Sony camera. The camara however did offer a method to format the memory card. I followed the suggested method and it worked. If you can't get it to work, bring the camera into a camera store and ask them for help, or go to the camera brand's web help site.
A:AnswerPer the manufacturer: "UHS Speed Class 3 designates a performance option designed to support real-time video recording with UHS enabled host devices."
I recommend you check the Sony HandyCam's manufacturer's specifications to confirm if this card will work with your device.