There are two possible ways:
A. Recording the undistorted game:
1. Open the vorpX ingame menu with [DEL]
2. Go to the display page of the ingame menu
3. Activate “Direct Mode Show Original”
This should allow you to record the undistorted view.
B. Recording the stereo view like seen in the headset:
1. Run the game windowed
2. Open the vorpX ingame menu with [DEL]
3. Go to the display page of the ingame menu
4. Activate “Direct Mode Show Mirror Window”. This option is only available when running a game windowed.
This should allow you to record the stereo view.