Affinity Photo transparent gradient image
add mask use gradient tool it's really that simple
learn • do • know
ffmpeg -i input.mp4 -vf "drawtext=fontfile='/Users/joel/Library/Fonts/Calderock Inky.ttf':text='%{eif\:(NNN-t)/60\:d\:2}\:%{eif\:mod(NNN-t,60)\:d\:2}':fontcolor=white:fontsize=48:x=570:y=1100" -c:a copy output.mp4 where NNN = video length border-radius: 1px 2px 3px 4px / 5px 6px 7px 8px; is the same as border-top-left-radius: 1px / 5px; border-top-right-radius: 2px / 6px; border-bottom-right-radius: 3px / 7px; border-bottom-left-radius: 4px / 8px; The order is border-top-left-radius x border-top-right-radius x border-bottom-right-radius x border-bottom-left-radius x / border-top-left-radius y border-top-right-radius y border-bottom-right-radius y border-bottom-left-radius y ; x4 + y4 = 1