ffmpeg -loglevel info -nostats -threads 8 -f lavfi -i testsrc -re -f lavfi -i sine -filter_complex "[0:v:0]yadif,split=3[mobile_filter_input][tablet_filter_input][tv_filter_input];[mobile_filter_input]scale=trunc(sar*iw*288/ih/2)*2:288[mobile_filter_output];[tablet_filter_input]scale=trunc(sar*iw*432/ih/2)*2:432[tablet_filter_output];[tv_filter_input]scale=trunc(sar*iw*480/ih/2)*2:480[tv_filter_output]" -map [mobile_filter_output] -c:v libx264 -profile:v baseline -preset faster -pix_fmt yuv420p -b:v 500k -maxrate:v 1500k -bufsize:v 5000k -refs 6 -bf 0 -g 250 -keyint_min 250 -map 1:a:0 -c:a   libfaac -f ssegment -segment_list_size 5 -segment_list 500/chunklist.m3u8 -segment_time 10 -segment_list_flags +live -strftime 1 "500/%Y%m%d%H%M%S" -map [tablet_filter_output] -c:v libx264 -profile:v baseline -pix_fmt yuv420p -preset faster -b:v 900k -maxrate:v 1900k -bufsize:v 9000k -refs 6 -bf 0 -g 250 -keyint_min 250 -map 1:a:0 -c:a  libfaac -f ssegment -segment_list_size 5 -segment_list 900/chunklist.m3u8 -segment_time 10 -segment_list_flags +live -strftime 1 "900/%Y%m%d%H%M%S" -map [tv_filter_output] -c:v libx264 -profile:v baseline -preset faster -pix_fmt yuv420p -b:v 1500k -maxrate:v 2500k -bufsize:v 15000k -refs 6 -bf 0 -g 250 -keyint_min 250 -map 1:a:0 -c:a   libfaac -f ssegment -segment_list_size 5 -segment_list 1500/chunklist.m3u8 -segment_time 10 -segment_list_flags +live -strftime 1 "1500/%Y%m%d%H%M%S"