echo making directories
mkdir -p test-video{,/input-frames,/output-frames}

echo making blank image
convert -size 300x50 xc:white test-video/blank.png

echo starting ffconcat file
echo ffconcat version 1.0 > test-video/list.ffconcat

echo making frames and adding them to ffconcat file
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '0s 00f - 1s 49f' -stroke none -annotate 0 '0s 00f - 1s 49f' test-video/blank.png test-video/input-frames/000.png;echo file input-frames/000.png >> test-video/list.ffconcat;echo duration 2 >> test-video/list.ffconcat

convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 00f - 2s 00f' -stroke none -annotate 0 '2s 00f - 2s 00f' test-video/blank.png test-video/input-frames/200.png;echo file input-frames/200.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 01f - 2s 01f' -stroke none -annotate 0 '2s 01f - 2s 01f' test-video/blank.png test-video/input-frames/201.png;echo file input-frames/201.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 02f - 2s 02f' -stroke none -annotate 0 '2s 02f - 2s 02f' test-video/blank.png test-video/input-frames/202.png;echo file input-frames/202.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 03f - 2s 03f' -stroke none -annotate 0 '2s 03f - 2s 03f' test-video/blank.png test-video/input-frames/203.png;echo file input-frames/203.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 04f - 2s 04f' -stroke none -annotate 0 '2s 04f - 2s 04f' test-video/blank.png test-video/input-frames/204.png;echo file input-frames/204.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 05f - 2s 05f' -stroke none -annotate 0 '2s 05f - 2s 05f' test-video/blank.png test-video/input-frames/205.png;echo file input-frames/205.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 06f - 2s 06f' -stroke none -annotate 0 '2s 06f - 2s 06f' test-video/blank.png test-video/input-frames/206.png;echo file input-frames/206.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 07f - 2s 07f' -stroke none -annotate 0 '2s 07f - 2s 07f' test-video/blank.png test-video/input-frames/207.png;echo file input-frames/207.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 08f - 2s 08f' -stroke none -annotate 0 '2s 08f - 2s 08f' test-video/blank.png test-video/input-frames/208.png;echo file input-frames/208.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 09f - 2s 09f' -stroke none -annotate 0 '2s 09f - 2s 09f' test-video/blank.png test-video/input-frames/209.png;echo file input-frames/209.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 10f - 2s 10f' -stroke none -annotate 0 '2s 10f - 2s 10f' test-video/blank.png test-video/input-frames/210.png;echo file input-frames/210.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 11f - 2s 11f' -stroke none -annotate 0 '2s 11f - 2s 11f' test-video/blank.png test-video/input-frames/211.png;echo file input-frames/211.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 12f - 2s 12f' -stroke none -annotate 0 '2s 12f - 2s 12f' test-video/blank.png test-video/input-frames/212.png;echo file input-frames/212.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 13f - 2s 13f' -stroke none -annotate 0 '2s 13f - 2s 13f' test-video/blank.png test-video/input-frames/213.png;echo file input-frames/213.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 14f - 2s 14f' -stroke none -annotate 0 '2s 14f - 2s 14f' test-video/blank.png test-video/input-frames/214.png;echo file input-frames/214.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 15f - 2s 15f' -stroke none -annotate 0 '2s 15f - 2s 15f' test-video/blank.png test-video/input-frames/215.png;echo file input-frames/215.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 16f - 2s 16f' -stroke none -annotate 0 '2s 16f - 2s 16f' test-video/blank.png test-video/input-frames/216.png;echo file input-frames/216.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 17f - 2s 17f' -stroke none -annotate 0 '2s 17f - 2s 17f' test-video/blank.png test-video/input-frames/217.png;echo file input-frames/217.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 18f - 2s 18f' -stroke none -annotate 0 '2s 18f - 2s 18f' test-video/blank.png test-video/input-frames/218.png;echo file input-frames/218.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 19f - 2s 19f' -stroke none -annotate 0 '2s 19f - 2s 19f' test-video/blank.png test-video/input-frames/219.png;echo file input-frames/219.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 20f - 2s 20f' -stroke none -annotate 0 '2s 20f - 2s 20f' test-video/blank.png test-video/input-frames/220.png;echo file input-frames/220.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 21f - 2s 21f' -stroke none -annotate 0 '2s 21f - 2s 21f' test-video/blank.png test-video/input-frames/221.png;echo file input-frames/221.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 22f - 2s 22f' -stroke none -annotate 0 '2s 22f - 2s 22f' test-video/blank.png test-video/input-frames/222.png;echo file input-frames/222.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 23f - 2s 23f' -stroke none -annotate 0 '2s 23f - 2s 23f' test-video/blank.png test-video/input-frames/223.png;echo file input-frames/223.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 24f - 2s 24f' -stroke none -annotate 0 '2s 24f - 2s 24f' test-video/blank.png test-video/input-frames/224.png;echo file input-frames/224.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 25f - 2s 25f' -stroke none -annotate 0 '2s 25f - 2s 25f' test-video/blank.png test-video/input-frames/225.png;echo file input-frames/225.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 26f - 2s 26f' -stroke none -annotate 0 '2s 26f - 2s 26f' test-video/blank.png test-video/input-frames/226.png;echo file input-frames/226.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 27f - 2s 27f' -stroke none -annotate 0 '2s 27f - 2s 27f' test-video/blank.png test-video/input-frames/227.png;echo file input-frames/227.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 28f - 2s 28f' -stroke none -annotate 0 '2s 28f - 2s 28f' test-video/blank.png test-video/input-frames/228.png;echo file input-frames/228.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 29f - 2s 29f' -stroke none -annotate 0 '2s 29f - 2s 29f' test-video/blank.png test-video/input-frames/229.png;echo file input-frames/229.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 30f - 2s 30f' -stroke none -annotate 0 '2s 30f - 2s 30f' test-video/blank.png test-video/input-frames/230.png;echo file input-frames/230.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 31f - 2s 31f' -stroke none -annotate 0 '2s 31f - 2s 31f' test-video/blank.png test-video/input-frames/231.png;echo file input-frames/231.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 32f - 2s 32f' -stroke none -annotate 0 '2s 32f - 2s 32f' test-video/blank.png test-video/input-frames/232.png;echo file input-frames/232.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 33f - 2s 33f' -stroke none -annotate 0 '2s 33f - 2s 33f' test-video/blank.png test-video/input-frames/233.png;echo file input-frames/233.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 34f - 2s 34f' -stroke none -annotate 0 '2s 34f - 2s 34f' test-video/blank.png test-video/input-frames/234.png;echo file input-frames/234.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 35f - 2s 35f' -stroke none -annotate 0 '2s 35f - 2s 35f' test-video/blank.png test-video/input-frames/235.png;echo file input-frames/235.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 36f - 2s 36f' -stroke none -annotate 0 '2s 36f - 2s 36f' test-video/blank.png test-video/input-frames/236.png;echo file input-frames/236.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 37f - 2s 37f' -stroke none -annotate 0 '2s 37f - 2s 37f' test-video/blank.png test-video/input-frames/237.png;echo file input-frames/237.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 38f - 2s 38f' -stroke none -annotate 0 '2s 38f - 2s 38f' test-video/blank.png test-video/input-frames/238.png;echo file input-frames/238.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 39f - 2s 39f' -stroke none -annotate 0 '2s 39f - 2s 39f' test-video/blank.png test-video/input-frames/239.png;echo file input-frames/239.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 40f - 2s 40f' -stroke none -annotate 0 '2s 40f - 2s 40f' test-video/blank.png test-video/input-frames/240.png;echo file input-frames/240.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 41f - 2s 41f' -stroke none -annotate 0 '2s 41f - 2s 41f' test-video/blank.png test-video/input-frames/241.png;echo file input-frames/241.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 42f - 2s 42f' -stroke none -annotate 0 '2s 42f - 2s 42f' test-video/blank.png test-video/input-frames/242.png;echo file input-frames/242.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 43f - 2s 43f' -stroke none -annotate 0 '2s 43f - 2s 43f' test-video/blank.png test-video/input-frames/243.png;echo file input-frames/243.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 44f - 2s 44f' -stroke none -annotate 0 '2s 44f - 2s 44f' test-video/blank.png test-video/input-frames/244.png;echo file input-frames/244.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 45f - 2s 45f' -stroke none -annotate 0 '2s 45f - 2s 45f' test-video/blank.png test-video/input-frames/245.png;echo file input-frames/245.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 46f - 2s 46f' -stroke none -annotate 0 '2s 46f - 2s 46f' test-video/blank.png test-video/input-frames/246.png;echo file input-frames/246.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 47f - 2s 47f' -stroke none -annotate 0 '2s 47f - 2s 47f' test-video/blank.png test-video/input-frames/247.png;echo file input-frames/247.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 48f - 2s 48f' -stroke none -annotate 0 '2s 48f - 2s 48f' test-video/blank.png test-video/input-frames/248.png;echo file input-frames/248.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '2s 49f - 2s 49f' -stroke none -annotate 0 '2s 49f - 2s 49f' test-video/blank.png test-video/input-frames/249.png;echo file input-frames/249.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 00f - 3s 00f' -stroke none -annotate 0 '3s 00f - 3s 00f' test-video/blank.png test-video/input-frames/300.png;echo file input-frames/300.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 01f - 3s 01f' -stroke none -annotate 0 '3s 01f - 3s 01f' test-video/blank.png test-video/input-frames/301.png;echo file input-frames/301.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 02f - 3s 02f' -stroke none -annotate 0 '3s 02f - 3s 02f' test-video/blank.png test-video/input-frames/302.png;echo file input-frames/302.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 03f - 3s 03f' -stroke none -annotate 0 '3s 03f - 3s 03f' test-video/blank.png test-video/input-frames/303.png;echo file input-frames/303.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 04f - 3s 04f' -stroke none -annotate 0 '3s 04f - 3s 04f' test-video/blank.png test-video/input-frames/304.png;echo file input-frames/304.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 05f - 3s 05f' -stroke none -annotate 0 '3s 05f - 3s 05f' test-video/blank.png test-video/input-frames/305.png;echo file input-frames/305.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 06f - 3s 06f' -stroke none -annotate 0 '3s 06f - 3s 06f' test-video/blank.png test-video/input-frames/306.png;echo file input-frames/306.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 07f - 3s 07f' -stroke none -annotate 0 '3s 07f - 3s 07f' test-video/blank.png test-video/input-frames/307.png;echo file input-frames/307.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 08f - 3s 08f' -stroke none -annotate 0 '3s 08f - 3s 08f' test-video/blank.png test-video/input-frames/308.png;echo file input-frames/308.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 09f - 3s 09f' -stroke none -annotate 0 '3s 09f - 3s 09f' test-video/blank.png test-video/input-frames/309.png;echo file input-frames/309.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 10f - 3s 10f' -stroke none -annotate 0 '3s 10f - 3s 10f' test-video/blank.png test-video/input-frames/310.png;echo file input-frames/310.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 11f - 3s 11f' -stroke none -annotate 0 '3s 11f - 3s 11f' test-video/blank.png test-video/input-frames/311.png;echo file input-frames/311.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 12f - 3s 12f' -stroke none -annotate 0 '3s 12f - 3s 12f' test-video/blank.png test-video/input-frames/312.png;echo file input-frames/312.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 13f - 3s 13f' -stroke none -annotate 0 '3s 13f - 3s 13f' test-video/blank.png test-video/input-frames/313.png;echo file input-frames/313.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 14f - 3s 14f' -stroke none -annotate 0 '3s 14f - 3s 14f' test-video/blank.png test-video/input-frames/314.png;echo file input-frames/314.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 15f - 3s 15f' -stroke none -annotate 0 '3s 15f - 3s 15f' test-video/blank.png test-video/input-frames/315.png;echo file input-frames/315.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 16f - 3s 16f' -stroke none -annotate 0 '3s 16f - 3s 16f' test-video/blank.png test-video/input-frames/316.png;echo file input-frames/316.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 17f - 3s 17f' -stroke none -annotate 0 '3s 17f - 3s 17f' test-video/blank.png test-video/input-frames/317.png;echo file input-frames/317.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 18f - 3s 18f' -stroke none -annotate 0 '3s 18f - 3s 18f' test-video/blank.png test-video/input-frames/318.png;echo file input-frames/318.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 19f - 3s 19f' -stroke none -annotate 0 '3s 19f - 3s 19f' test-video/blank.png test-video/input-frames/319.png;echo file input-frames/319.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 20f - 3s 20f' -stroke none -annotate 0 '3s 20f - 3s 20f' test-video/blank.png test-video/input-frames/320.png;echo file input-frames/320.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 21f - 3s 21f' -stroke none -annotate 0 '3s 21f - 3s 21f' test-video/blank.png test-video/input-frames/321.png;echo file input-frames/321.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 22f - 3s 22f' -stroke none -annotate 0 '3s 22f - 3s 22f' test-video/blank.png test-video/input-frames/322.png;echo file input-frames/322.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 23f - 3s 23f' -stroke none -annotate 0 '3s 23f - 3s 23f' test-video/blank.png test-video/input-frames/323.png;echo file input-frames/323.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 24f - 3s 24f' -stroke none -annotate 0 '3s 24f - 3s 24f' test-video/blank.png test-video/input-frames/324.png;echo file input-frames/324.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 25f - 3s 25f' -stroke none -annotate 0 '3s 25f - 3s 25f' test-video/blank.png test-video/input-frames/325.png;echo file input-frames/325.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 26f - 3s 26f' -stroke none -annotate 0 '3s 26f - 3s 26f' test-video/blank.png test-video/input-frames/326.png;echo file input-frames/326.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 27f - 3s 27f' -stroke none -annotate 0 '3s 27f - 3s 27f' test-video/blank.png test-video/input-frames/327.png;echo file input-frames/327.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 28f - 3s 28f' -stroke none -annotate 0 '3s 28f - 3s 28f' test-video/blank.png test-video/input-frames/328.png;echo file input-frames/328.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 29f - 3s 29f' -stroke none -annotate 0 '3s 29f - 3s 29f' test-video/blank.png test-video/input-frames/329.png;echo file input-frames/329.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 30f - 3s 30f' -stroke none -annotate 0 '3s 30f - 3s 30f' test-video/blank.png test-video/input-frames/330.png;echo file input-frames/330.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 31f - 3s 31f' -stroke none -annotate 0 '3s 31f - 3s 31f' test-video/blank.png test-video/input-frames/331.png;echo file input-frames/331.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 32f - 3s 32f' -stroke none -annotate 0 '3s 32f - 3s 32f' test-video/blank.png test-video/input-frames/332.png;echo file input-frames/332.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 33f - 3s 33f' -stroke none -annotate 0 '3s 33f - 3s 33f' test-video/blank.png test-video/input-frames/333.png;echo file input-frames/333.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 34f - 3s 34f' -stroke none -annotate 0 '3s 34f - 3s 34f' test-video/blank.png test-video/input-frames/334.png;echo file input-frames/334.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 35f - 3s 35f' -stroke none -annotate 0 '3s 35f - 3s 35f' test-video/blank.png test-video/input-frames/335.png;echo file input-frames/335.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 36f - 3s 36f' -stroke none -annotate 0 '3s 36f - 3s 36f' test-video/blank.png test-video/input-frames/336.png;echo file input-frames/336.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 37f - 3s 37f' -stroke none -annotate 0 '3s 37f - 3s 37f' test-video/blank.png test-video/input-frames/337.png;echo file input-frames/337.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 38f - 3s 38f' -stroke none -annotate 0 '3s 38f - 3s 38f' test-video/blank.png test-video/input-frames/338.png;echo file input-frames/338.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 39f - 3s 39f' -stroke none -annotate 0 '3s 39f - 3s 39f' test-video/blank.png test-video/input-frames/339.png;echo file input-frames/339.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 40f - 3s 40f' -stroke none -annotate 0 '3s 40f - 3s 40f' test-video/blank.png test-video/input-frames/340.png;echo file input-frames/340.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 41f - 3s 41f' -stroke none -annotate 0 '3s 41f - 3s 41f' test-video/blank.png test-video/input-frames/341.png;echo file input-frames/341.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 42f - 3s 42f' -stroke none -annotate 0 '3s 42f - 3s 42f' test-video/blank.png test-video/input-frames/342.png;echo file input-frames/342.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 43f - 3s 43f' -stroke none -annotate 0 '3s 43f - 3s 43f' test-video/blank.png test-video/input-frames/343.png;echo file input-frames/343.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 44f - 3s 44f' -stroke none -annotate 0 '3s 44f - 3s 44f' test-video/blank.png test-video/input-frames/344.png;echo file input-frames/344.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 45f - 3s 45f' -stroke none -annotate 0 '3s 45f - 3s 45f' test-video/blank.png test-video/input-frames/345.png;echo file input-frames/345.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 46f - 3s 46f' -stroke none -annotate 0 '3s 46f - 3s 46f' test-video/blank.png test-video/input-frames/346.png;echo file input-frames/346.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 47f - 3s 47f' -stroke none -annotate 0 '3s 47f - 3s 47f' test-video/blank.png test-video/input-frames/347.png;echo file input-frames/347.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 48f - 3s 48f' -stroke none -annotate 0 '3s 48f - 3s 48f' test-video/blank.png test-video/input-frames/348.png;echo file input-frames/348.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '3s 49f - 3s 49f' -stroke none -annotate 0 '3s 49f - 3s 49f' test-video/blank.png test-video/input-frames/349.png;echo file input-frames/349.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 00f - 4s 00f' -stroke none -annotate 0 '4s 00f - 4s 00f' test-video/blank.png test-video/input-frames/400.png;echo file input-frames/400.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 01f - 4s 01f' -stroke none -annotate 0 '4s 01f - 4s 01f' test-video/blank.png test-video/input-frames/401.png;echo file input-frames/401.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 02f - 4s 02f' -stroke none -annotate 0 '4s 02f - 4s 02f' test-video/blank.png test-video/input-frames/402.png;echo file input-frames/402.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 03f - 4s 03f' -stroke none -annotate 0 '4s 03f - 4s 03f' test-video/blank.png test-video/input-frames/403.png;echo file input-frames/403.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 04f - 4s 04f' -stroke none -annotate 0 '4s 04f - 4s 04f' test-video/blank.png test-video/input-frames/404.png;echo file input-frames/404.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 05f - 4s 05f' -stroke none -annotate 0 '4s 05f - 4s 05f' test-video/blank.png test-video/input-frames/405.png;echo file input-frames/405.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 06f - 4s 06f' -stroke none -annotate 0 '4s 06f - 4s 06f' test-video/blank.png test-video/input-frames/406.png;echo file input-frames/406.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 07f - 4s 07f' -stroke none -annotate 0 '4s 07f - 4s 07f' test-video/blank.png test-video/input-frames/407.png;echo file input-frames/407.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 08f - 4s 08f' -stroke none -annotate 0 '4s 08f - 4s 08f' test-video/blank.png test-video/input-frames/408.png;echo file input-frames/408.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 09f - 4s 09f' -stroke none -annotate 0 '4s 09f - 4s 09f' test-video/blank.png test-video/input-frames/409.png;echo file input-frames/409.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 10f - 4s 10f' -stroke none -annotate 0 '4s 10f - 4s 10f' test-video/blank.png test-video/input-frames/410.png;echo file input-frames/410.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 11f - 4s 11f' -stroke none -annotate 0 '4s 11f - 4s 11f' test-video/blank.png test-video/input-frames/411.png;echo file input-frames/411.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 12f - 4s 12f' -stroke none -annotate 0 '4s 12f - 4s 12f' test-video/blank.png test-video/input-frames/412.png;echo file input-frames/412.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 13f - 4s 13f' -stroke none -annotate 0 '4s 13f - 4s 13f' test-video/blank.png test-video/input-frames/413.png;echo file input-frames/413.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 14f - 4s 14f' -stroke none -annotate 0 '4s 14f - 4s 14f' test-video/blank.png test-video/input-frames/414.png;echo file input-frames/414.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 15f - 4s 15f' -stroke none -annotate 0 '4s 15f - 4s 15f' test-video/blank.png test-video/input-frames/415.png;echo file input-frames/415.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 16f - 4s 16f' -stroke none -annotate 0 '4s 16f - 4s 16f' test-video/blank.png test-video/input-frames/416.png;echo file input-frames/416.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 17f - 4s 17f' -stroke none -annotate 0 '4s 17f - 4s 17f' test-video/blank.png test-video/input-frames/417.png;echo file input-frames/417.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 18f - 4s 18f' -stroke none -annotate 0 '4s 18f - 4s 18f' test-video/blank.png test-video/input-frames/418.png;echo file input-frames/418.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 19f - 4s 19f' -stroke none -annotate 0 '4s 19f - 4s 19f' test-video/blank.png test-video/input-frames/419.png;echo file input-frames/419.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 20f - 4s 20f' -stroke none -annotate 0 '4s 20f - 4s 20f' test-video/blank.png test-video/input-frames/420.png;echo file input-frames/420.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 21f - 4s 21f' -stroke none -annotate 0 '4s 21f - 4s 21f' test-video/blank.png test-video/input-frames/421.png;echo file input-frames/421.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 22f - 4s 22f' -stroke none -annotate 0 '4s 22f - 4s 22f' test-video/blank.png test-video/input-frames/422.png;echo file input-frames/422.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 23f - 4s 23f' -stroke none -annotate 0 '4s 23f - 4s 23f' test-video/blank.png test-video/input-frames/423.png;echo file input-frames/423.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 24f - 4s 24f' -stroke none -annotate 0 '4s 24f - 4s 24f' test-video/blank.png test-video/input-frames/424.png;echo file input-frames/424.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat

convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '4s 25f - 5s 24f' -stroke none -annotate 0 '4s 25f - 5s 24f' test-video/blank.png test-video/input-frames/425.png;echo file input-frames/425.png >> test-video/list.ffconcat;echo duration 1 >> test-video/list.ffconcat

convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 25f - 5s 25f' -stroke none -annotate 0 '5s 25f - 5s 25f' test-video/blank.png test-video/input-frames/525.png;echo file input-frames/525.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 26f - 5s 26f' -stroke none -annotate 0 '5s 26f - 5s 26f' test-video/blank.png test-video/input-frames/526.png;echo file input-frames/526.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 27f - 5s 27f' -stroke none -annotate 0 '5s 27f - 5s 27f' test-video/blank.png test-video/input-frames/527.png;echo file input-frames/527.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 28f - 5s 28f' -stroke none -annotate 0 '5s 28f - 5s 28f' test-video/blank.png test-video/input-frames/528.png;echo file input-frames/528.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 29f - 5s 29f' -stroke none -annotate 0 '5s 29f - 5s 29f' test-video/blank.png test-video/input-frames/529.png;echo file input-frames/529.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 30f - 5s 30f' -stroke none -annotate 0 '5s 30f - 5s 30f' test-video/blank.png test-video/input-frames/530.png;echo file input-frames/530.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 31f - 5s 31f' -stroke none -annotate 0 '5s 31f - 5s 31f' test-video/blank.png test-video/input-frames/531.png;echo file input-frames/531.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 32f - 5s 32f' -stroke none -annotate 0 '5s 32f - 5s 32f' test-video/blank.png test-video/input-frames/532.png;echo file input-frames/532.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 33f - 5s 33f' -stroke none -annotate 0 '5s 33f - 5s 33f' test-video/blank.png test-video/input-frames/533.png;echo file input-frames/533.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 34f - 5s 34f' -stroke none -annotate 0 '5s 34f - 5s 34f' test-video/blank.png test-video/input-frames/534.png;echo file input-frames/534.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 35f - 5s 35f' -stroke none -annotate 0 '5s 35f - 5s 35f' test-video/blank.png test-video/input-frames/535.png;echo file input-frames/535.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 36f - 5s 36f' -stroke none -annotate 0 '5s 36f - 5s 36f' test-video/blank.png test-video/input-frames/536.png;echo file input-frames/536.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 37f - 5s 37f' -stroke none -annotate 0 '5s 37f - 5s 37f' test-video/blank.png test-video/input-frames/537.png;echo file input-frames/537.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 38f - 5s 38f' -stroke none -annotate 0 '5s 38f - 5s 38f' test-video/blank.png test-video/input-frames/538.png;echo file input-frames/538.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 39f - 5s 39f' -stroke none -annotate 0 '5s 39f - 5s 39f' test-video/blank.png test-video/input-frames/539.png;echo file input-frames/539.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 40f - 5s 40f' -stroke none -annotate 0 '5s 40f - 5s 40f' test-video/blank.png test-video/input-frames/540.png;echo file input-frames/540.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 41f - 5s 41f' -stroke none -annotate 0 '5s 41f - 5s 41f' test-video/blank.png test-video/input-frames/541.png;echo file input-frames/541.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 42f - 5s 42f' -stroke none -annotate 0 '5s 42f - 5s 42f' test-video/blank.png test-video/input-frames/542.png;echo file input-frames/542.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 43f - 5s 43f' -stroke none -annotate 0 '5s 43f - 5s 43f' test-video/blank.png test-video/input-frames/543.png;echo file input-frames/543.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 44f - 5s 44f' -stroke none -annotate 0 '5s 44f - 5s 44f' test-video/blank.png test-video/input-frames/544.png;echo file input-frames/544.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 45f - 5s 45f' -stroke none -annotate 0 '5s 45f - 5s 45f' test-video/blank.png test-video/input-frames/545.png;echo file input-frames/545.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 46f - 5s 46f' -stroke none -annotate 0 '5s 46f - 5s 46f' test-video/blank.png test-video/input-frames/546.png;echo file input-frames/546.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 47f - 5s 47f' -stroke none -annotate 0 '5s 47f - 5s 47f' test-video/blank.png test-video/input-frames/547.png;echo file input-frames/547.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 48f - 5s 48f' -stroke none -annotate 0 '5s 48f - 5s 48f' test-video/blank.png test-video/input-frames/548.png;echo file input-frames/548.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '5s 49f - 5s 49f' -stroke none -annotate 0 '5s 49f - 5s 49f' test-video/blank.png test-video/input-frames/549.png;echo file input-frames/549.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 00f - 6s 00f' -stroke none -annotate 0 '6s 00f - 6s 00f' test-video/blank.png test-video/input-frames/600.png;echo file input-frames/600.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 01f - 6s 01f' -stroke none -annotate 0 '6s 01f - 6s 01f' test-video/blank.png test-video/input-frames/601.png;echo file input-frames/601.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 02f - 6s 02f' -stroke none -annotate 0 '6s 02f - 6s 02f' test-video/blank.png test-video/input-frames/602.png;echo file input-frames/602.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 03f - 6s 03f' -stroke none -annotate 0 '6s 03f - 6s 03f' test-video/blank.png test-video/input-frames/603.png;echo file input-frames/603.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 04f - 6s 04f' -stroke none -annotate 0 '6s 04f - 6s 04f' test-video/blank.png test-video/input-frames/604.png;echo file input-frames/604.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 05f - 6s 05f' -stroke none -annotate 0 '6s 05f - 6s 05f' test-video/blank.png test-video/input-frames/605.png;echo file input-frames/605.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 06f - 6s 06f' -stroke none -annotate 0 '6s 06f - 6s 06f' test-video/blank.png test-video/input-frames/606.png;echo file input-frames/606.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 07f - 6s 07f' -stroke none -annotate 0 '6s 07f - 6s 07f' test-video/blank.png test-video/input-frames/607.png;echo file input-frames/607.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 08f - 6s 08f' -stroke none -annotate 0 '6s 08f - 6s 08f' test-video/blank.png test-video/input-frames/608.png;echo file input-frames/608.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 09f - 6s 09f' -stroke none -annotate 0 '6s 09f - 6s 09f' test-video/blank.png test-video/input-frames/609.png;echo file input-frames/609.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 10f - 6s 10f' -stroke none -annotate 0 '6s 10f - 6s 10f' test-video/blank.png test-video/input-frames/610.png;echo file input-frames/610.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 11f - 6s 11f' -stroke none -annotate 0 '6s 11f - 6s 11f' test-video/blank.png test-video/input-frames/611.png;echo file input-frames/611.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 12f - 6s 12f' -stroke none -annotate 0 '6s 12f - 6s 12f' test-video/blank.png test-video/input-frames/612.png;echo file input-frames/612.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 13f - 6s 13f' -stroke none -annotate 0 '6s 13f - 6s 13f' test-video/blank.png test-video/input-frames/613.png;echo file input-frames/613.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 14f - 6s 14f' -stroke none -annotate 0 '6s 14f - 6s 14f' test-video/blank.png test-video/input-frames/614.png;echo file input-frames/614.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 15f - 6s 15f' -stroke none -annotate 0 '6s 15f - 6s 15f' test-video/blank.png test-video/input-frames/615.png;echo file input-frames/615.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 16f - 6s 16f' -stroke none -annotate 0 '6s 16f - 6s 16f' test-video/blank.png test-video/input-frames/616.png;echo file input-frames/616.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 17f - 6s 17f' -stroke none -annotate 0 '6s 17f - 6s 17f' test-video/blank.png test-video/input-frames/617.png;echo file input-frames/617.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 18f - 6s 18f' -stroke none -annotate 0 '6s 18f - 6s 18f' test-video/blank.png test-video/input-frames/618.png;echo file input-frames/618.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 19f - 6s 19f' -stroke none -annotate 0 '6s 19f - 6s 19f' test-video/blank.png test-video/input-frames/619.png;echo file input-frames/619.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 20f - 6s 20f' -stroke none -annotate 0 '6s 20f - 6s 20f' test-video/blank.png test-video/input-frames/620.png;echo file input-frames/620.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 21f - 6s 21f' -stroke none -annotate 0 '6s 21f - 6s 21f' test-video/blank.png test-video/input-frames/621.png;echo file input-frames/621.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 22f - 6s 22f' -stroke none -annotate 0 '6s 22f - 6s 22f' test-video/blank.png test-video/input-frames/622.png;echo file input-frames/622.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 23f - 6s 23f' -stroke none -annotate 0 '6s 23f - 6s 23f' test-video/blank.png test-video/input-frames/623.png;echo file input-frames/623.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 24f - 6s 24f' -stroke none -annotate 0 '6s 24f - 6s 24f' test-video/blank.png test-video/input-frames/624.png;echo file input-frames/624.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 25f - 6s 25f' -stroke none -annotate 0 '6s 25f - 6s 25f' test-video/blank.png test-video/input-frames/625.png;echo file input-frames/625.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 26f - 6s 26f' -stroke none -annotate 0 '6s 26f - 6s 26f' test-video/blank.png test-video/input-frames/626.png;echo file input-frames/626.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 27f - 6s 27f' -stroke none -annotate 0 '6s 27f - 6s 27f' test-video/blank.png test-video/input-frames/627.png;echo file input-frames/627.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 28f - 6s 28f' -stroke none -annotate 0 '6s 28f - 6s 28f' test-video/blank.png test-video/input-frames/628.png;echo file input-frames/628.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 29f - 6s 29f' -stroke none -annotate 0 '6s 29f - 6s 29f' test-video/blank.png test-video/input-frames/629.png;echo file input-frames/629.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 30f - 6s 30f' -stroke none -annotate 0 '6s 30f - 6s 30f' test-video/blank.png test-video/input-frames/630.png;echo file input-frames/630.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 31f - 6s 31f' -stroke none -annotate 0 '6s 31f - 6s 31f' test-video/blank.png test-video/input-frames/631.png;echo file input-frames/631.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 32f - 6s 32f' -stroke none -annotate 0 '6s 32f - 6s 32f' test-video/blank.png test-video/input-frames/632.png;echo file input-frames/632.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 33f - 6s 33f' -stroke none -annotate 0 '6s 33f - 6s 33f' test-video/blank.png test-video/input-frames/633.png;echo file input-frames/633.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 34f - 6s 34f' -stroke none -annotate 0 '6s 34f - 6s 34f' test-video/blank.png test-video/input-frames/634.png;echo file input-frames/634.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 35f - 6s 35f' -stroke none -annotate 0 '6s 35f - 6s 35f' test-video/blank.png test-video/input-frames/635.png;echo file input-frames/635.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 36f - 6s 36f' -stroke none -annotate 0 '6s 36f - 6s 36f' test-video/blank.png test-video/input-frames/636.png;echo file input-frames/636.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 37f - 6s 37f' -stroke none -annotate 0 '6s 37f - 6s 37f' test-video/blank.png test-video/input-frames/637.png;echo file input-frames/637.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 38f - 6s 38f' -stroke none -annotate 0 '6s 38f - 6s 38f' test-video/blank.png test-video/input-frames/638.png;echo file input-frames/638.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 39f - 6s 39f' -stroke none -annotate 0 '6s 39f - 6s 39f' test-video/blank.png test-video/input-frames/639.png;echo file input-frames/639.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 40f - 6s 40f' -stroke none -annotate 0 '6s 40f - 6s 40f' test-video/blank.png test-video/input-frames/640.png;echo file input-frames/640.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 41f - 6s 41f' -stroke none -annotate 0 '6s 41f - 6s 41f' test-video/blank.png test-video/input-frames/641.png;echo file input-frames/641.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 42f - 6s 42f' -stroke none -annotate 0 '6s 42f - 6s 42f' test-video/blank.png test-video/input-frames/642.png;echo file input-frames/642.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 43f - 6s 43f' -stroke none -annotate 0 '6s 43f - 6s 43f' test-video/blank.png test-video/input-frames/643.png;echo file input-frames/643.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 44f - 6s 44f' -stroke none -annotate 0 '6s 44f - 6s 44f' test-video/blank.png test-video/input-frames/644.png;echo file input-frames/644.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 45f - 6s 45f' -stroke none -annotate 0 '6s 45f - 6s 45f' test-video/blank.png test-video/input-frames/645.png;echo file input-frames/645.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 46f - 6s 46f' -stroke none -annotate 0 '6s 46f - 6s 46f' test-video/blank.png test-video/input-frames/646.png;echo file input-frames/646.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 47f - 6s 47f' -stroke none -annotate 0 '6s 47f - 6s 47f' test-video/blank.png test-video/input-frames/647.png;echo file input-frames/647.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 48f - 6s 48f' -stroke none -annotate 0 '6s 48f - 6s 48f' test-video/blank.png test-video/input-frames/648.png;echo file input-frames/648.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '6s 49f - 6s 49f' -stroke none -annotate 0 '6s 49f - 6s 49f' test-video/blank.png test-video/input-frames/649.png;echo file input-frames/649.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 00f - 7s 00f' -stroke none -annotate 0 '7s 00f - 7s 00f' test-video/blank.png test-video/input-frames/700.png;echo file input-frames/700.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 01f - 7s 01f' -stroke none -annotate 0 '7s 01f - 7s 01f' test-video/blank.png test-video/input-frames/701.png;echo file input-frames/701.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 02f - 7s 02f' -stroke none -annotate 0 '7s 02f - 7s 02f' test-video/blank.png test-video/input-frames/702.png;echo file input-frames/702.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 03f - 7s 03f' -stroke none -annotate 0 '7s 03f - 7s 03f' test-video/blank.png test-video/input-frames/703.png;echo file input-frames/703.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 04f - 7s 04f' -stroke none -annotate 0 '7s 04f - 7s 04f' test-video/blank.png test-video/input-frames/704.png;echo file input-frames/704.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 05f - 7s 05f' -stroke none -annotate 0 '7s 05f - 7s 05f' test-video/blank.png test-video/input-frames/705.png;echo file input-frames/705.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 06f - 7s 06f' -stroke none -annotate 0 '7s 06f - 7s 06f' test-video/blank.png test-video/input-frames/706.png;echo file input-frames/706.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 07f - 7s 07f' -stroke none -annotate 0 '7s 07f - 7s 07f' test-video/blank.png test-video/input-frames/707.png;echo file input-frames/707.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 08f - 7s 08f' -stroke none -annotate 0 '7s 08f - 7s 08f' test-video/blank.png test-video/input-frames/708.png;echo file input-frames/708.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 09f - 7s 09f' -stroke none -annotate 0 '7s 09f - 7s 09f' test-video/blank.png test-video/input-frames/709.png;echo file input-frames/709.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 10f - 7s 10f' -stroke none -annotate 0 '7s 10f - 7s 10f' test-video/blank.png test-video/input-frames/710.png;echo file input-frames/710.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 11f - 7s 11f' -stroke none -annotate 0 '7s 11f - 7s 11f' test-video/blank.png test-video/input-frames/711.png;echo file input-frames/711.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 12f - 7s 12f' -stroke none -annotate 0 '7s 12f - 7s 12f' test-video/blank.png test-video/input-frames/712.png;echo file input-frames/712.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 13f - 7s 13f' -stroke none -annotate 0 '7s 13f - 7s 13f' test-video/blank.png test-video/input-frames/713.png;echo file input-frames/713.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 14f - 7s 14f' -stroke none -annotate 0 '7s 14f - 7s 14f' test-video/blank.png test-video/input-frames/714.png;echo file input-frames/714.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 15f - 7s 15f' -stroke none -annotate 0 '7s 15f - 7s 15f' test-video/blank.png test-video/input-frames/715.png;echo file input-frames/715.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 16f - 7s 16f' -stroke none -annotate 0 '7s 16f - 7s 16f' test-video/blank.png test-video/input-frames/716.png;echo file input-frames/716.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 17f - 7s 17f' -stroke none -annotate 0 '7s 17f - 7s 17f' test-video/blank.png test-video/input-frames/717.png;echo file input-frames/717.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 18f - 7s 18f' -stroke none -annotate 0 '7s 18f - 7s 18f' test-video/blank.png test-video/input-frames/718.png;echo file input-frames/718.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 19f - 7s 19f' -stroke none -annotate 0 '7s 19f - 7s 19f' test-video/blank.png test-video/input-frames/719.png;echo file input-frames/719.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 20f - 7s 20f' -stroke none -annotate 0 '7s 20f - 7s 20f' test-video/blank.png test-video/input-frames/720.png;echo file input-frames/720.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 21f - 7s 21f' -stroke none -annotate 0 '7s 21f - 7s 21f' test-video/blank.png test-video/input-frames/721.png;echo file input-frames/721.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 22f - 7s 22f' -stroke none -annotate 0 '7s 22f - 7s 22f' test-video/blank.png test-video/input-frames/722.png;echo file input-frames/722.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 23f - 7s 23f' -stroke none -annotate 0 '7s 23f - 7s 23f' test-video/blank.png test-video/input-frames/723.png;echo file input-frames/723.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 24f - 7s 24f' -stroke none -annotate 0 '7s 24f - 7s 24f' test-video/blank.png test-video/input-frames/724.png;echo file input-frames/724.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 25f - 7s 25f' -stroke none -annotate 0 '7s 25f - 7s 25f' test-video/blank.png test-video/input-frames/725.png;echo file input-frames/725.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 26f - 7s 26f' -stroke none -annotate 0 '7s 26f - 7s 26f' test-video/blank.png test-video/input-frames/726.png;echo file input-frames/726.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 27f - 7s 27f' -stroke none -annotate 0 '7s 27f - 7s 27f' test-video/blank.png test-video/input-frames/727.png;echo file input-frames/727.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 28f - 7s 28f' -stroke none -annotate 0 '7s 28f - 7s 28f' test-video/blank.png test-video/input-frames/728.png;echo file input-frames/728.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 29f - 7s 29f' -stroke none -annotate 0 '7s 29f - 7s 29f' test-video/blank.png test-video/input-frames/729.png;echo file input-frames/729.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 30f - 7s 30f' -stroke none -annotate 0 '7s 30f - 7s 30f' test-video/blank.png test-video/input-frames/730.png;echo file input-frames/730.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 31f - 7s 31f' -stroke none -annotate 0 '7s 31f - 7s 31f' test-video/blank.png test-video/input-frames/731.png;echo file input-frames/731.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 32f - 7s 32f' -stroke none -annotate 0 '7s 32f - 7s 32f' test-video/blank.png test-video/input-frames/732.png;echo file input-frames/732.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 33f - 7s 33f' -stroke none -annotate 0 '7s 33f - 7s 33f' test-video/blank.png test-video/input-frames/733.png;echo file input-frames/733.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 34f - 7s 34f' -stroke none -annotate 0 '7s 34f - 7s 34f' test-video/blank.png test-video/input-frames/734.png;echo file input-frames/734.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 35f - 7s 35f' -stroke none -annotate 0 '7s 35f - 7s 35f' test-video/blank.png test-video/input-frames/735.png;echo file input-frames/735.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 36f - 7s 36f' -stroke none -annotate 0 '7s 36f - 7s 36f' test-video/blank.png test-video/input-frames/736.png;echo file input-frames/736.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 37f - 7s 37f' -stroke none -annotate 0 '7s 37f - 7s 37f' test-video/blank.png test-video/input-frames/737.png;echo file input-frames/737.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 38f - 7s 38f' -stroke none -annotate 0 '7s 38f - 7s 38f' test-video/blank.png test-video/input-frames/738.png;echo file input-frames/738.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 39f - 7s 39f' -stroke none -annotate 0 '7s 39f - 7s 39f' test-video/blank.png test-video/input-frames/739.png;echo file input-frames/739.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 40f - 7s 40f' -stroke none -annotate 0 '7s 40f - 7s 40f' test-video/blank.png test-video/input-frames/740.png;echo file input-frames/740.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 41f - 7s 41f' -stroke none -annotate 0 '7s 41f - 7s 41f' test-video/blank.png test-video/input-frames/741.png;echo file input-frames/741.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 42f - 7s 42f' -stroke none -annotate 0 '7s 42f - 7s 42f' test-video/blank.png test-video/input-frames/742.png;echo file input-frames/742.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 43f - 7s 43f' -stroke none -annotate 0 '7s 43f - 7s 43f' test-video/blank.png test-video/input-frames/743.png;echo file input-frames/743.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 44f - 7s 44f' -stroke none -annotate 0 '7s 44f - 7s 44f' test-video/blank.png test-video/input-frames/744.png;echo file input-frames/744.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 45f - 7s 45f' -stroke none -annotate 0 '7s 45f - 7s 45f' test-video/blank.png test-video/input-frames/745.png;echo file input-frames/745.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 46f - 7s 46f' -stroke none -annotate 0 '7s 46f - 7s 46f' test-video/blank.png test-video/input-frames/746.png;echo file input-frames/746.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 47f - 7s 47f' -stroke none -annotate 0 '7s 47f - 7s 47f' test-video/blank.png test-video/input-frames/747.png;echo file input-frames/747.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 48f - 7s 48f' -stroke none -annotate 0 '7s 48f - 7s 48f' test-video/blank.png test-video/input-frames/748.png;echo file input-frames/748.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat
convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '7s 49f - 7s 49f' -stroke none -annotate 0 '7s 49f - 7s 49f' test-video/blank.png test-video/input-frames/749.png;echo file input-frames/749.png >> test-video/list.ffconcat;echo duration 0.02 >> test-video/list.ffconcat

convert -font FreeMono-Bold -pointsize 30 -gravity center -stroke '#FFFC' -strokewidth 10 -annotate 0 '8s 00f - 9s 49f' -stroke none -annotate 0 '8s 00f - 9s 49f' test-video/blank.png test-video/input-frames/800.png;echo file input-frames/800.png >> test-video/list.ffconcat;echo duration 2 >> test-video/list.ffconcat

making video
ffmpeg -i test-video/list.ffconcat -vf fps=50 -c:v libvpx-vp9 -pix_fmt yuv420p test-video/video.webm

extracting video frames
ffmpeg -i test-video/video.webm test-video/output-frames/%d.png