[0:v]split=4[c0v][c1v][c2v][c3v];[0:a]asplit=4[c0a][c1a][c2a][c3a];[c0v] trim=start=0:end=31.85,setpts=PTS-STARTPTS,fps=24,settb=AVTB [t0v]; [c0a] atrim=start=0:end=31.35,asetpts=PTS-STARTPTS [t0a]; [c1v] trim=start=121.56000000000006:end=125.24000000000007,setpts=PTS-STARTPTS,fps=24,settb=AVTB [t1v]; [c1a] atrim=start=121.56000000000006:end=125.24000000000007,asetpts=PTS-STARTPTS [t1a]; [c2v] trim=start=127:end=147.57,setpts=PTS-STARTPTS,fps=24,settb=AVTB [t2v]; [c2a] atrim=start=127:end=147.57,asetpts=PTS-STARTPTS [t2a]; [c3v] trim=start=149.07000000000005:end=184.85000000000005,setpts=PTS-STARTPTS,fps=24,settb=AVTB [t3v]; [c3a] atrim=start=149.07000000000005:end=184.85000000000005,asetpts=PTS-STARTPTS [t3a]; [t0v][t1v]xfade=transition=fade:duration=0.5:offset=31.35[vfade1];[vfade1][t2v]concat=n=2:v=1:a=0[vfade2]; [vfade2][t3v]concat=n=2:v=1:a=0[outv]; [t0a][t1a][t2a][t3a]concat=n=4:v=0:a=1[outa];