Is there a way to integrate RCA or AV video output on the radxa zero

I am considering to buy the radxa zero 3w for it’s high speeds and graphics capabilities but it has one thing that the raspberry Pi zero 1 and 2 has that it doesn’t which is the rca connectors. I need to use both the hdmi for one display and another alternative for the second display. I originally planned to use the dsi connector on the radxa zero 2 but my display doesn’t support it and alternatives like dsi to hdmi were expensive and hard to find. I wondering if it is possible to integrate rca maybe using uart or the usb 2.0 OTG connector. Also is it possible to use both display at once or is there a compromise that I must make.