ffmpeg incantation to convert a single long image into a rolling marquee-style video

scroll-image-video.sh

#!/bin/bash
# ffmpeg -loop 1 -t 10 -i "${1:-1.png}" \
#       -vf "crop=w=W:h=ih:x='(iw-W)*t/10':y=0" \
#       -r 25 -pix_fmt yuv420p out.mp4

# ffmpeg -f lavfi -i color=s=1920x1080 -loop 1 -t 0.08 -i "input.png" \
# 	-filter_complex "[1:v]scale=1920:-2,setpts=if(eq(N,0),0,1+1/0.02/TB),fps=25[fg];[0:v][fg]overlay=x=-'t*h*0.02':eof_action=endall[v]" \
# 	-map "[v]" output.mp4

ffmpeg -f lavfi -i color=s=1920x1080 -loop 1 -t 0.08 -i "input.png" -filter_complex "[1:v]scale=1920:-2,setpts=if(eq(N\,0)\,0\,1+1/0.02/TB),fps=25[fg]; [0:v][fg]overlay=y=-'t*h*0.02':eof_action=endall[v]" -map "[v]" output.mp4


# ffmpeg -loop 1 -t 10 -i input.png \ -vf "crop=w=W:h=ih:x='(iw-W)*t/10':y=0" \ -r 25 -pix_fmt yuv420p out.mp4