Flash based encoder application doesn't like HDV

Hello.

I need some help. We are developing a flash based application to stream video to flash media server, but flash player settings window (where you choose the camera input and set permissions what flash player can do) doesn't show cameras that output HDV picture. They just won't show up there at all. I tried with multiple cameras, and I tried with the same camera in both DV and HDV format. DV shows, HDV doesn't. Same camera under quicktime works, so connection is ok.

Any clue why it's so??

Thank you,
Vaiko