ffmpeg -i input.mp4 \
-vf "

drawbox=x=80:y=180:w=1120:h=340:color=white:t=fill:enable='gte(t,67.5)',

drawtext=text='ชีวิตดีขึ้น':
fontfile=/usr/share/fonts/truetype/noto/NotoSerifThai-Bold.ttf:
fontsize=72:
fontcolor=black:
x=(w-text_w)/2:
y=250:
alpha='if(lt(t,68),0,if(lt(t,69),(t-68),1))',

drawtext=text='เมื่อมีแมว':
fontfile=/usr/share/fonts/truetype/noto/NotoSerifThai-Bold.ttf:
fontsize=72:
fontcolor=red:
x=(w-text_w)/2-40:
y=350:
alpha='if(lt(t,70),0,if(lt(t,71),(t-70),1))',

drawtext=text='=)':
fontfile=/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf:
fontsize=72:
fontcolor=red:
x=(w/2)+170:
y=360:
alpha='if(lt(t,70),0,if(lt(t,71),(t-70),1))'

" \
-c:a copy output.mp4