===== Streaming =====
==== RTSP ====
  * VLC in ubuntu 20.04 supports RTSP but does not in 22.04
  * snap VLC in 22.04 supports RTSP
  * easiest might be ffplay:
<code>
ffplay rtsp://<IP ADDR>/profile2/media.smp
</code>
  * send to loopback ''/dev/video0'':
<code>
ffmpeg -i rtsp://<IP ADDR>/profile2/media.smp -f v4l2 -vf format=yuv420p -loglevel error /dev/video0
</code>