Очередность преобразований в ffmpeg

ffmpeg -i /1080p.mp4 -preset veryslow -profile:v main -c:v libx265 -pix_fmt yuv420p -vf \
        -keyint_min 250 -g 250 -sc_threshold 0 \
        -c:a aac -b:a 128k -ac 2 -ar 48000 \
        -map v:0 -filter:v:0 "scale=-2:144" -minrate:0 100k  -maxrate:0 180k -bufsize:0 150k \
        -map v:1 -filter:v:1 "scale=-2:240" -minrate:1 150k -maxrate:1 200k -bufsize:1 150k \
        -map v:2 -filter:v:2 "scale=-2:360" -minrate:2 250k -maxrate:2 300k -bufsize:2 200k \
        -map 0:a \
        -init_seg_name "init-\$RepresentationID\$.\$ext\$" \
        -media_seg_name "chunk-\$RepresentationID\$-\$Number%05d\$.\$ext\$" \
        -dash_segment_type mp4 -use_template 1 -use_timeline 0 -seg_duration 10 \
        -adaptation_sets "id=0,streams=v id=1,streams=a" \
        -f dash /ds/dash.mpd

ffmpeg -i /1080p.mp4 -preset veryslow -profile:v main -c:v libx265 -pix_fmt yuv420p -vf \
        -keyint_min 250 -g 250 -sc_threshold 0 \
        -c:a aac -b:a 128k -ac 2 -ar 48000 \
        -map v:1 -filter:v:1 "scale=-2:240" -minrate:1 150k -maxrate:1 200k -bufsize:1 150k \
        -map v:2 -filter:v:2 "scale=-2:144" -minrate:2 100k  -maxrate:2 180k -bufsize:2 150k \
        -map 0:a \
        -init_seg_name "init-\$RepresentationID\$.\$ext\$" \
        -media_seg_name "chunk-\$RepresentationID\$-\$Number%05d\$.\$ext\$" \
        -dash_segment_type mp4 -use_template 1 -use_timeline 0 -seg_duration 10 \
        -adaptation_sets "id=0,streams=v id=1,streams=a" \
        -f dash /ds/dash.mpd

1080 -> 360
1080 -> 240
1080 -> 144

1080 -> 360
360 -> 240
240 -> 144