@set BLK=color=c=black:r=60:size=1280x800:d=7.0[black]
@set V0=[0:v]format=pix_fmts=yuva420p,zoompan=d=25*10:s=1280x800,fade=t=out:st=3.0:d=1.0:alpha=1,setpts=PTS-STARTPTS[v0]
@set V1=[1:v]format=pix_fmts=yuva420p,zoompan=z='zoom+0.002':d=25*10:s=1280x800,fade=t=in:st=0:d=1.0:alpha=1,setpts=PTS-STARTPTS+3.0/TB[v1]
@rem set V1=[1:v]format=pix_fmts=yuva420p,zoompan=d=25*4:s=1280x800,fade=t=in:st=0:d=1.0:alpha=1,setpts=PTS-STARTPTS+3.0/TB[v1]
@set V2=[2:v]format=pix_fmts=yuva420p,zoompan=d=25*10:s=1280x800,fade=t=in:st=0:d=1.0:alpha=1,setpts=PTS-STARTPTS+6.0/TB[v2]

ffmpeg -y -i img001.jpg -i img002.jpg -i img003.jpg -filter_complex "%BLK%;%V0%;%V1%;%V2%;[black][v0]overlay[ov0];[ov0][v1]overlay[ov1];[ov1][v2]overlay=format=yuv420" -c:v libx264 -y out.mp4