Does PowerDirector support HDV camcorder? What devices are supported by it?

Yes. PowerDirector allows you to import, edit and export HD (720p/1080i). Using PowerDirector HDV MPEG engine, you can batch capture, edit just like you do with DV. Output to various format or write back to camcorder.
PowerDirector 5 now supports most HDV camcorder on the market, including Sony HDR-FX1 (HDV), Sony HDR-HC1 (HDV), JVC GR-HD1U (HDV).