I have been reading for days and I can not seem to figure this out. I have a need to be able to output from HDMI at 720x480 16x9 interlaced at 29.97hz for specific hardware to see the output. I have tried tvservice with the ntsc option and can get 59.94 at the correct resolution but all the CEA modes are 50hz and higher. Anyone have any idea how to do this or if it's even possible??
I am on an rpi3b+ with minibian installed and using OMX player to output the video..