I'm trying to capture video from FA-CAM202. Final aim is to capture on NanoPI Neo. But for now I'm trying to do that on Ubuntu 18.04, using ffmpeg.
VLC shows me the picture just fine.
But command
ffmpeg -f v4l2 -framerate 5 -video_size 1600x1200 -i /dev/video0 output.mp4

creates blank picture with black background for all recording period. Could someone help me with proper command?