[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=28.38,setpts=PTS-STARTPTS,fps=25,settb=AVTB [t0v]; [c0a] atrim=start=0:end=27.88,asetpts=PTS-STARTPTS [t0a]; [c1v] trim=start=207.03999999999996:end=220.92999999999995,setpts=PTS-STARTPTS,fps=25,settb=AVTB [t1v]; [c1a] atrim=start=207.03999999999996:end=220.42999999999995,asetpts=PTS-STARTPTS [t1a]; [c2v] trim=start=0:end=12.24,setpts=PTS-STARTPTS,fps=25,settb=AVTB [t2v]; [c2a] atrim=start=0:end=12.24,asetpts=PTS-STARTPTS [t2a]; [c3v] trim=start=13.360000000000014:end=30.600000000000012,setpts=PTS-STARTPTS,fps=25,settb=AVTB [t3v]; [c3a] atrim=start=13.360000000000014:end=30.600000000000012,asetpts=PTS-STARTPTS [t3a]; [t0v][t1v]xfade=transition=fade:duration=0.5:offset=27.88[vfade1];[vfade1][t2v]xfade=transition=fade:duration=0.5:offset=41.269999999999996[vfade2];[vfade2][t3v]concat=n=2:v=1:a=0[outv]; [t0a][t1a][t2a][t3a]concat=n=4:v=0:a=1[outa];