ffmpeg -i "video.mp4" -i "1B.png" -i "1B.png" -i "1B.png" -i "1B.png" -i "1B.png" -i "1B.png" -filter_complex "
overlay=1:H-h:enable='between(t,0,3)',
overlay=1+(t-3)*200:(H-h):enable='between(t, 3, 7)',

overlay=W-w:H-h:enable='between(t,7, 12)',
overlay=W-w:(H-h)-(t-12)*200:enable='between(t, 12, 16)',

overlay=W-w:1:enable='between(t,16,20)',
overlay=(W+w)-(t-20)*200:1:enable='between(t, 20, 26)'" out.mp4