[0:v]split=2[c0v][c1v];[0:a]asplit=2[c0a][c1a];[c0v] trim=start=0:end=5.62,setpts=PTS-STARTPTS,fps=15,settb=AVTB [t0v]; [c0a] atrim=start=0:end=5.12,asetpts=PTS-STARTPTS [t0a]; [1:v] scale=1280:720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2:color=white,setsar=1:1,fps=15,settb=AVTB [t1v]; aevalsrc=0:d=3 [t1a]; [c1v] trim=start=5.12:end=12.8,setpts=PTS-STARTPTS,fps=15,settb=AVTB [t2v]; [c1a] atrim=start=5.12:end=12.8,asetpts=PTS-STARTPTS [t2a]; [t0v][t1v]xfade=transition=fade:duration=0.5:offset=5.12[vfade1];[vfade1][t2v]xfade=transition=fade:duration=0.5:offset=8.120000000000001[outv];[t0a][t1a][t2a]concat=n=3:v=0:a=1[outa];