That 50fps threw me for a second, I went onto two websites to find out a bit more about that cam and I found out that it is listed as NTSC from the following website...
Samsung VP-HMX10 Specs, Camcorder Reviews on CNET.co.uk
Main Features
Sensor type CMOS
Effective sensor resolution 1560000 pixels
Min shutter speed 1/60 s
Max shutter speed 1/10000 s
White balance presets Auto, Daylight, Cloudy, Fluorescent, Tungsten, and Custom
Min illumination 15 lux
Analogue video format NTSC?
And the reason why it shoots at 50fps was found on this site...
Samsung VP-HMX10 High Definition Camcorder
The use of 50 frames per second progressive recording offers fantastic picture quality to be viewed upon HD ready televisions screens, perfect for fast moving footage. The HMX10 records to either SDHC or MMC+ cards, allowing direct access of the contents for other home or mobile devices. Also see how the minimum shutter speed is 1/60 rather than 1/50?