Decoding the HDV format requires a special license. If you own Producer Studio, this license is included.
If you own Producer Pro, you need to purchase an additional $99 license to use HDV.
If you only have the free version of Producer, you will need to buy Producer Pro + HDV or Producer Studio.
To purchase the HDV plugin:
Launch Ustream Producer Free or Pro
Go to the File Menu (Windows) or the Ustream Producer Menu (Mac).
Go to Preferences > Register
Click the plus sign (+) to add a license.
Click the Purchase button. This will launch the online store where you can purchase the HDV license.
If you would like to use your HDV camera without purchasing a license, some HDV cameras may have a setting to switch the camera to operate in standard-defintion "DV" mode rather than HDV mode.
If your camera has such a setting, switch the camera to operate in DV mode mode and restart your computer and Ustream Producer.