ffmpeg -i intro.mp4 -c:v libx264 -crf 16 -preset medium -b:v 2M -maxrate 2.5M -bufsize 5M -g 60 -keyint_min 60 -c:a aac -b:a 128k -hls_time 6 -hls_list_size 0 -hls_segment_filename "segment_%03d.ts" -f hls playlist.m3u8
ffmpeg -i intro.mp4 -ss 00:00:02 -vframes 1 -q:v 2 poster.jpg