I don't have that particular camera but I have a few verifocal lens cameras and it took a little playing around to get things to work how I wanted but you should be able to get the zoom to work by playing with the camera manufacure and model settings in the video and PTZ tab
Perfect!! Worked like a charm!One of mine I had to change the Video settings to the following to get the Zoom to work, the other I was able to leave as RTSPView attachment 28849