I also just purchased the same GZ-HD7 and feel that the Mac support is pretty anemic.
Seems as if the transcoding/exporting is the only method right now of working with it in any sort of NLE on the Mac.
Here’s the tutorial from the makers of the QuickTime components.
https://software.transdigital.co.jp/products/cbs_ev/tutorial_eng/index.html
I’m sure more support from Apple will be coming, it’s just a pain having to endure this process in the meantime.
-Ted