ffmpeg -v verbose -f x11grab -follow_mouse 240 -show_region 1 -r 25 -s 640x480 -i :0.0 -f alsa -b:a 128 -ac 2 -i hw:0,0 -strict -2 -c:a aac -ar 44100 -c:v libx264 -preset $x264Preset -b:v 350k -pix_fmt yuv420p -bufsize 500k -maxrate 500k -f flv "rtmp://blah"