ffmpeg -re -i /home/user/nginx-1.8.0/html/videos/show/XXXX0101.mp4 -codec:v libx264 -profile:v high -preset slow -b:v 500k -maxrate 500k -bufsize 6000k -vf scale=-1:480 -threads 3 -codec:a libmp3lame -b:a 128k -f flv rtmp://127.0.0.1:1935/live/live