Hi,
It works very well.
I followed Jetson Nano FAQ that you wrote.
I changed the YUV format as UYVY in my device tree and I can get the live streaming.
I executed the command below.
gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,format=UYVY,width=1920,height=1080,framerate=60/1 ! nvvidconv ! 'video/x-raw(memory:NVMM),format=NV12' ! nvoverlaysink
Thank you so much.