Users connect to Epic application through a  double-hop scenario and the webcam isn't redirected.

In the Epic application we start the camera to make a picture of a patient.

When starting the camera in Epic, we get about 8 seconds a black screen. So the camera does not show the patient who is standing in front of the camera.


After this approximately 8 seconds black screen we see a green screen. 


Finally after you wave you hand in front of the camera you get an image of what the camera sees.


 

Issue is fixed by upgrading the VDA to 1912 CU2 or CU3. 

This is the relevant fix.

https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/1912-ltsr/whats-new/cumulative-update-2/fixed-issues.html


When you use HDX RealTime Webcam Video Compression, a webcam might show a black image instead of a live image. [CVADHELP-13877]