The native format of HDV isn’t QuickTime, its .M2T.

Anyway, while working on my latest book, I needed to convert .M2T files into something that Final Cut can edit. Final Cut likes lots and lots of different files – but not .M2T.

This means that if someone captures an HDV file in another application, such as Adobe OnLocation or Adobe Premiere, then sends it to you, you’ll need to transcode it to QuickTime before bringing it into Final Cut on MAC.

How to convert M2T to MOV on MAC » Camcorder Video Share