Nvoverlaysink maximum number

i use jetson xavier NX

i wonder xavier NX overlaysink maximum number
i found TX2 is 6, Nano is 2
and can you explain how to enable all the overlaysink
i only found for TX2 on /sys/class/graphics/fb0

Thanks for your help!

If your usecase is to render multi sources, we would suggest use nvcompositor plugin( or nvmultistreamtiler in DeepStream SDK ) to composite the sources into single plane and render through nvoverlaysink. This is the case verified and should work fine.

If it is not the usecase, please give more detail so that we can check and give suggestion.