May sound like a crazy question, and my first though was that these things are hard drives, so why should they be specfic to a certain video system.
So......Are they......??
For example........Can i buy a DR HD-100 from the US and use it on my JVC HD 101 here in Oz....???
Thanks
Paul

Paul,

it sounds crazy but yes. As the camera you're shooting is from a specific video system, the hard drive which records this footage has to be the same system so it understands your footage. It's not a simple hard disk, it's a recorder hard disk...