[0:v]split=1[c0v];[0:a]asplit=1[c0a];[1:v]split=1[c1v];[1:a]asplit=1[c1a];[2:v]split=1[c2v];[2:a]asplit=1[c2a];[3:v]split=1[c3v];[3:a]asplit=1[c3a];[c0v] trim=start=0:end=16.7,setpts=PTS-STARTPTS,fps=31,settb=AVTB [t0v]; [c0a] atrim=start=0:end=16.2,asetpts=PTS-STARTPTS [t0a]; [c1v] trim=start=0:end=19.19,setpts=PTS-STARTPTS,fps=31,settb=AVTB [t1v]; [c1a] atrim=start=0:end=18.69,asetpts=PTS-STARTPTS [t1a]; [c2v] trim=start=0:end=20.24,setpts=PTS-STARTPTS,fps=31,settb=AVTB [t2v]; [c2a] atrim=start=0:end=19.74,asetpts=PTS-STARTPTS [t2a]; [c3v] trim=start=0:end=10.32,setpts=PTS-STARTPTS,fps=31,settb=AVTB [t3v]; [c3a] atrim=start=0:end=10.32,asetpts=PTS-STARTPTS [t3a]; [t0v][t1v]xfade=transition=fade:duration=0.5:offset=16.2[vfade1];[vfade1][t2v]xfade=transition=fade:duration=0.5:offset=34.89[vfade2];[vfade2][t3v]xfade=transition=fade:duration=0.5:offset=54.629999999999995[outv];[t0a][t1a][t2a][t3a]concat=n=4:v=0:a=1[outa];