Hello,
I am the developer of an app that controls the movement of a camera. Using DirectShow and IAMCameraControl I was able to set camera properties as Pan, Tilt and Zoom without any problem.
The problem raises after KB5003173 Windows update. After that update I have problems modifying Zoom property. After call "set" function, the camera set the zoom to the desired position, but the function gets locked 5 seconds until "System.Runtime.InteropServices.COMException" exception is raised with HRESULT: 0x80070079. This is very frustrating for the app users because move the camera to the desired position now takes A LOT of time...
It is important to remark that setting Pan and Tilt properties executes almost instantly and don't raise any exception.
I don't know how to solve this problem because it is part of the Windows SDK... Any help?
Thanks