Hello, my name is Zeljko. I have problem communicating with camera. Model is DS-2CD4A26FWD-IZS. 
  
I am trying with software development kit to pull down information about veichle detection from camera.(in c#) 
  
This is the procedure to start talking to camera(manual how to use sdk): 
  
NET_DVR_Init(); 
NET_DVR_SetConnectTime(2000, 1); 
long user = NET_DVR_Login("192.168.1.64", 8000, "admin", "admin12345", ref lpDeviceInfo); 
NET_DVR_FindPicture(user, pictureParam); 
  
after last query camera respond -1 or that input output parameters(values) are not ok. 
  
So, my question is, Is anyone had similary problem because last few days I am banging with my head to the wall and I cannot 
solve this problem. What ever values I provide to the camera everything is wrong. 
So any help, advice would be apprecieted. I can provide code that I have written. 
  
Regards 
Zeljko