Sorry it's impossible, SplitCam Virtual driver not working without interface.
But you can configure your SplitCam only first time , after, it will be work automaticly. Just choose in splitcam what you need like a webcam screen and etc., after save project. Go to Zoom and choose in video setting SplitCam Video Driver and you will see splitcam into Zoom. If you reeboot pc you just need to start SplitCam and Zoom , you don't need to configure something else.
There may be a problem with the pathname or filename. you should try to save to the root of any disk ( c:\ or d:\.....) with a file name containing only Latin letters.