ffmpeg -loop 1 -t 5 -i img0.jpg -loop 1 -t 5 -i img1.jpg -loop 1 -t 5 -i img2.jpg -loop 1 -t 5 -i img3.jpg -loop 1 -t 5 -i img4.jpg -filter_complex "[0:v]fade=t=out:st=4:d=1[v0]; [1:v]fade=t=in:st=0:d=1,fade=t=out:st=4:d=1[v1]; [2:v]fade=t=in:st=0:d=1,fade=t=out:st=4:d=1[v2]; [3:v]fade=t=in:st=0:d=1,fade=t=out:st=4:d=1[v3]; [4:v]fade=t=in:st=0:d=1,fade=t=out:st=4:d=1[v4]; [v0][v1][v2][v3][v4]concat=n=5:v=1:a=0,format=yuv420p[v]" -map "[v]" out.mp4 |