[0:v]split=1[c0v];[0:a]asplit=1[c0a];[c0v] trim=start=0:end=47.534,setpts=PTS-STARTPTS,fps=24,settb=AVTB [t0v]; [c0a] atrim=start=0:end=47.534,asetpts=PTS-STARTPTS [t0a]; [t0v]concat=n=1:v=1:a=0[outv]; [outv] subtitles='/imagecap/temp/010000009881fa8f6c8b08de4c6e8288.ass':fontsdir=./assets:force_style='Fontname=Noto Sans' [outvlscs]; [1:a]atrim=start=0:end=34.314295,asetpts=PTS-STARTPTS[am],[am][2:a]concat=n=2:v=0:a=1[bgAudio];[bgAudio]loudnorm=I=-37.9[sba],[t0a][sba]amix=duration=shortest:normalize=0[outaa0];[outaa0]concat=n=1:v=0:a=1[outaa];