Holybro Pixhawk 4 and camera

Sorry, this may be a silly question… but I am completely new and trying to digest a lot of information…

I am trying to set up a “shopping list” for a Fixedwing Pixhawk controlled foamie and like to fly it by a joystick via QGControl/ArduPilot (like to have the RC transmitter as a backup and for take off and landing)

Understand that you need a radio link system (RFDesign or similar) to be able to maintain the communication with the Pixhawk. But will that transmit video? Or will Pixhawk only supply OSD data and you need a separate radio for the video/FPV transmission?