ffmpeg \ -video_size 1920x1080 -framerate 60 \ -f x11grab -i :0.0+100,200 \ -f alsa -i default \ -f webm -cluster_size_limit 2M -cluster_time_limit 5100 -content_type video/webm \ -c:a libvorbis -b:a 96K \ -c:v libvpx -b:v 1.5M -crf 30 -g 150 -deadline good -threads 4 \ icecast://source:hackme@localhost:8754/stream.webm # http://localhost:8754/stream.webm
Source – https://gitlab.com/guoyunhe/plasma-cast/blob/master/stream.sh
After you can use – https://github.com/balloob/pychromecast/