#3 Access cams with high security

[Peterson Roberto Oliveira]

I have the following scenario:
I need to access cameras with high security level.
When I try to access the camera using VLC player, the camera asks for user and password to access the live stream.
When I use the "Onvif Project" to access the camera, the library generates about 12 black screens and stop generating new screens.
How could I authenticate the user using the libraries?
I have the username and password needed to access the stream.

More details:

I create the "MediaStreamInfo" passing a "UserNameToken" with valid values.

When I execute the method "GetStreamUri" I have an error as resonse. Error 400 - Bad request response.

I am running this synchronously, using windows service and C#.

I tryed to execute the "SetUser" method and I had a "bad request response" too.