Troubleshooting

Cursor getting stuck on the left side of the screen

If you experience this problem as we did using Ubuntu Mate 20.04 and kernel 5.15, you can try the workaround posted here:

$ xrandr --output HDMI-1 --transform 1,0,-1,0,1,0,0,0,1

If it works, you can add that line to your ~/.xprofile to make the change permanent.

Poor streaming performance

If you measure less than 30fps for the H.264 encoded camera frames:

$ rostopic hz  /vaapi_sender/encoded
subscribed to [/vaapi_sender/encoded]
average rate: 32.357
	min: 0.000s max: 0.093s std dev: 0.03582s window: 30
average rate: 31.023

check that the images that are being encoded have a resolution of not more than 640x480 pixels.