High speed recording duration
The maximum high-speed recording duration for a single clip varies a lot between cameras using this type of sensor, e.g. 10 minutes for Casio EX-FH20 and 10 seconds for Sanyo VPC-FH1. It's normally hidden in the specs somewhere, and for this camera it looks like 30 seconds. It makes a big difference if you're recording sports. I've found that sometimes high resolution 60fps recording and postprocessing with e.g. Twixtor is a better bet - there are examples of both at spannerspotter.com.