ffmpeg で Apple HTTP Live Streaming（HLS）を扱う | ニコラボffmpeg -re -i input -filter:v:0 scale=-2:720 -c:v:0 libx264 -c:a:0 aac -b:a:1 128k -filter:v:1 scale=-2:360 -c:v:1 libx264 -c:a:1 aac -b:a:1 96k -filter:v:2 scale=-2:240 -c:v:2 libx264 -map v:0 -map v:0 -map v:0 -map a:0 -map a:0 -flags +global_header -f tee "[select=\'v:0,a:0\':f=hls:start_number=0:hls_time=10:hls_list_size=0]high.m3u8|[select=\'v:1,a:1\':f=hls:start_number=0:hls_time=10:hls_list
