[0:v] scale=2400:1350:force_original_aspect_ratio=1,pad=2400:1350:(ow-iw)/2:(oh-ih)/2:color=white,setsar=1:1,fps=25[i_video];color=c=black:s=2400x1350:r=25:d=0.5[i_black];[i_video][i_black]concat=n=2:v=1:a=0,settb=AVTB [t0v]; aevalsrc=0:d=10.01 [t0a]; [1:v] scale=2400:1350:force_original_aspect_ratio=1,pad=2400:1350:(ow-iw)/2:(oh-ih)/2:color=white,setsar=1:1,fps=25,settb=AVTB [t1v]; aevalsrc=0:d=3 [t1a]; [2:v]split=2[c0v][c1v];[2:a]asplit=2[c0a][c1a];[c0v] trim=start=0:end=5.87,setpts=PTS-STARTPTS,setsar=1:1,fps=25,settb=AVTB [t2v]; [c0a] atrim=start=0:end=5.87,asetpts=PTS-STARTPTS [t2a]; [c1v] trim=start=6.28000000000003:end=21.38000000000003,setpts=PTS-STARTPTS,setsar=1:1,fps=25,settb=AVTB [t3v]; [c1a] atrim=start=6.28000000000003:end=20.88000000000003,asetpts=PTS-STARTPTS [t3a]; [3:v] scale=2400:1350:force_original_aspect_ratio=1,pad=2400:1350:(ow-iw)/2:(oh-ih)/2:color=white,setsar=1:1,fps=25[o_video]; color=c=black:s=2400x1350:r=25:d=0.5 [o_black]; [o_video][o_black] concat=n=2:v=1:a=0,settb=AVTB [t4v]; aevalsrc=0:d=10.01 [t4a]; [4:v] scale=2400:1350:force_original_aspect_ratio=1,pad=2400:1350:(ow-iw)/2:(oh-ih)/2:color=white,setsar=1:1,fps=25,settb=AVTB [t5v]; aevalsrc=0:d=3 [t5a]; [t0v][t1v]xfade=transition=fade:duration=0.5:offset=10.01[vfade1];[vfade1][t2v]xfade=transition=fade:duration=0.5:offset=13.01[vfade2];[vfade2][t3v]concat=n=2:v=1:a=0[vfade3]; [vfade3][t4v]xfade=transition=fade:duration=0.5:offset=33.48[vfade4];[vfade4][t5v]xfade=transition=fade:duration=0.5:offset=43.489999999999995[outv];[t0a][t1a][t2a][t3a][t4a][t5a]concat=n=6:v=0:a=1[outa];