[0:v]split=4[c0v][c1v][c2v][c3v];[0:a]asplit=4[c0a][c1a][c2a][c3a];[c0v] trim=start=0:end=19.91,setpts=PTS-STARTPTS,fps=15,settb=AVTB [t0v]; [c0a] atrim=start=0:end=19.41,asetpts=PTS-STARTPTS [t0a]; [c1v] trim=start=26.5300000000002:end=35.6700000000002,setpts=PTS-STARTPTS,fps=15,settb=AVTB [t1v]; [c1a] atrim=start=26.5300000000002:end=35.1700000000002,asetpts=PTS-STARTPTS [t1a]; [c2v] trim=start=121.59000000000015:end=144.09000000000015,setpts=PTS-STARTPTS,fps=15,settb=AVTB [t2v]; [c2a] atrim=start=121.59000000000015:end=143.59000000000015,asetpts=PTS-STARTPTS [t2a]; [c3v] trim=start=173.96000000000004:end=183.08000000000004,setpts=PTS-STARTPTS,fps=15,settb=AVTB [t3v]; [c3a] atrim=start=173.96000000000004:end=183.08000000000004,asetpts=PTS-STARTPTS [t3a]; [t0v][t1v]xfade=transition=fade:duration=0.5:offset=19.41[vfade1];[vfade1][t2v]xfade=transition=fade:duration=0.5:offset=28.05[vfade2];[vfade2][t3v]xfade=transition=fade:duration=0.5:offset=50.05[outv];[t0a][t1a][t2a][t3a]concat=n=4:v=0:a=1[outa];