[0:v] scale=1920:1080:force_original_aspect_ratio=1,pad=1920:1080:(ow-iw)/2:(oh-ih)/2:color=white,setsar=1:1,fps=25[i_video];color=c=black:s=1920x1080:r=25:d=0.5[i_black];[i_video][i_black]concat=n=2:v=1:a=0,settb=AVTB [t0v]; [0:a]asetpts=PTS-STARTPTS[t0a]; [1:v]split=3[c0v][c1v][c2v];[1:a]asplit=3[c0a][c1a][c2a];[c0v] trim=start=0:end=14.36,setpts=PTS-STARTPTS,setsar=1:1,fps=25,settb=AVTB [t1v]; [c0a] atrim=start=0:end=13.86,asetpts=PTS-STARTPTS [t1a]; [c1v] trim=start=45.61999999999995:end=52.559999999999945,setpts=PTS-STARTPTS,setsar=1:1,fps=25,settb=AVTB [t2v]; [c1a] atrim=start=45.61999999999995:end=52.059999999999945,asetpts=PTS-STARTPTS [t2a]; [c2v] trim=start=244.31999999999994:end=249.25999999999993,setpts=PTS-STARTPTS,setsar=1:1,fps=25,settb=AVTB [t3v]; [c2a] atrim=start=244.31999999999994:end=248.75999999999993,asetpts=PTS-STARTPTS [t3a]; [2:v] scale=1920:1080:force_original_aspect_ratio=1,pad=1920:1080:(ow-iw)/2:(oh-ih)/2:color=white,setsar=1:1,fps=25,settb=AVTB [t4v]; [2:a] asetpts=PTS-STARTPTS [t4a]; [t0v][t1v]xfade=transition=fade:duration=0.5:offset=3.533333[vfade1];[vfade1][t2v]xfade=transition=fade:duration=0.5:offset=17.393333[vfade2];[vfade2][t3v]xfade=transition=fade:duration=0.5:offset=23.833333[vfade3];[vfade3][t4v]xfade=transition=fade:duration=0.5:offset=28.273333[outv];[t0a][t1a][t2a][t3a][t4a]concat=n=5:v=0:a=1[outa];