Summary
Video sources may be missing because of connection issues, incorrect settings, or other unexpected issues. You can try restarting VMix, adding a new source, or reconnecting an external device.
Suggestions
Step 1: Double-check that all devices are connected to the laptop, turned on, and properly functioning.
Step 2: Double-check that the appropriate preset is open on VMix.
Step 3: If neither of these steps have resolved the issue, restart VMix and open the preset.
Step 4: If the issue is still unresolved, try reconnecting the external device (camera, audio interface, etc.) which is not working.
Step 5: If the source is properly connected, try adding the input again. Notify a member of the staff.
