On the video transmitter, which is usually the device on the UAV the following changes needs to be done additionally. Until further notice this can be done with a Raspberry Pi 0 only.
D2X configuration
nxpD2X.conf- in the D2X config file the following lines needs to be changed to
VideoFunction=TX
VideoInOut=1
AutoStartVideo=1
Video receiver
On the video receiver, which is usually the device on the ground the following changes needs to be done additionally.
D2X configuration
nxpD2X.conf- in the D2X config file the following lines needs to be changed to