Streamer can't start if the video was not started
It would be good to have something resilient to such state.
[rawvideo demuxer @ 0x563d754351c0] Unable to parse option value "NonexNone" as image size
[rawvideo demuxer @ 0x563d754351c0] Error setting option video_size to value NonexNone.
pipe:0: Invalid argument
Before launching the streamer, i have to setup the camera the following way
proxy.video_live=True
Maybe the streamer could wait until a video camera size is available.