ffmpeg -rtsp_transport udp -i rtsp://192.168.100.200:554 -stream_loop -1 -re -i file.mp3 -map 0:v -map 1:a -tune zerolatency -vcodec libx264 -pix_fmt yuv420p -c:v copy -c:a aac -b:a 192k -strict experimental -f flv rtmp://a.rtmp.youtube.com/live2/всякое