-c:v h264 -vf scale=-2:{$resolution} -r 24 -g 48 -keyint_min 48 -sc_threshold 0 -bf 3 -b_strategy 2 -minrate {$minrate}k -crf 23 -maxrate {$maxrate}k -bufsize {$bufsize}k -c:a aac -b:a {$autioBitrate}k -f hls -hls_time 6 -hls_list_size 0 -hls_key_info_file {$destinationFile}keyinfo {$destinationFile}res{$resolution}/index.m3u8