[Wrapper-user] Why JMF can't detect USB camera when start it as windows service?

[hail z. <hai...@gm...>]

Hi,
I encounter a problem during try to wrapper an application as a windows
service.
This application use JMF(Java Media Framework) to detect local USB camera,
and get still image from it. When I start it in cmd mode(java -jar myapp.jar)
or in eclipse, it works fine. But when I start the service(wrapper -t
myapp.conf), it couldn't detect any USB camera, I don't know why?
I thought perhaps it caused by user privilege problem, so I change the login
account as local administrator, and enable desktop interaction, but still
throw java.lang.reflect.InvocationTargetException.
Hope you can help me, thanks!

Best regards,
Hai...@gm...

-- 
Best regards,

Hail.zhang