[0:v]split=2[c0v][c1v];[0:a]asplit=2[c0a][c1a];[1:v]split=2[c2v][c3v];[1:a]asplit=2[c2a][c3a];[c0v] trim=start=0:end=16.79,setpts=PTS-STARTPTS,fps=30,settb=AVTB [t0v]; [c0a] atrim=start=0:end=16.29,asetpts=PTS-STARTPTS [t0a]; [c1v] trim=start=242.99000000000007:end=269.1500000000001,setpts=PTS-STARTPTS,fps=30,settb=AVTB [t1v]; [c1a] atrim=start=242.99000000000007:end=268.6500000000001,asetpts=PTS-STARTPTS [t1a]; [c2v] trim=start=0:end=10.54,setpts=PTS-STARTPTS,fps=30,settb=AVTB [t2v]; [c2a] atrim=start=0:end=10.54,asetpts=PTS-STARTPTS [t2a]; [c3v] trim=start=14.359000000000151:end=20.92000000000015,setpts=PTS-STARTPTS,fps=30,settb=AVTB [t3v]; [c3a] atrim=start=14.359000000000151:end=20.92000000000015,asetpts=PTS-STARTPTS [t3a]; [t0v][t1v]xfade=transition=fade:duration=0.5:offset=16.29[vfade1];[vfade1][t2v]xfade=transition=fade:duration=0.5:offset=41.95[vfade2];[vfade2][t3v]concat=n=2:v=1:a=0[outv]; [t0a][t1a][t2a][t3a]concat=n=4:v=0:a=1[outa];