ffmpeg Command Commented

python3 script.py | # run python script and pipe it's stdout to ffmpeg
ffmpeg # ffmpeg binary path
-f rawvideo # input container is rawvideo
-vcodec rawvideo # input codec is rawvideo
-s 640x360 # size of input frame
-pix_fmt rgba # input pixel format
-r 30 # framerate
-i - # input is coming from stdin through pipe
-f lavfi # dummy audio
-i anullsrc # dummy audio
-c:v libx264 # encode output as h264
-b:v 1M # bitrate for output 1Mbit
-f flv # output container flv
rtmp://x.rtmp.youtube.com/live2/LIVE_STREAM_KEY \ # YouTube RTMP address followed by key