[0:v]split=1[c0v];[0:a]asplit=1[c0a];[c0v] trim=start=0:end=5,setpts=PTS-STARTPTS,fps=15,settb=AVTB [t0v]; [c0a] atrim=start=0:end=5,asetpts=PTS-STARTPTS [t0a]; [t0v]concat=n=1:v=1:a=0[outv]; color=#000000:size=1280x254,format=yuva420p,geq=r=0:g=0:b=0:a='min(255*2*Y/H,255)'[box];color=#000000:s=250x87[bgt];[bgt]drawtext=text='Test overlay':fontfile='/imagecap/cache/9ccc22b9ad56a56f.ttf':fontcolor=#FFFFFF:fontsize=49:x=20:y=40:alpha='if(lt(t,0.25),0,if(lt(t,0.5),(t-0.25)/0.25,if(lt(t,4.5),1,if(lt(t,4.75),(0.25-(t-4.5))/0.25,0))))':expansion=none[bgtt];[box][bgtt]overlay=x=40:y=127:shortest=1[bft1];[bft1]fade=out:st=4.5:d=0.5:alpha=1[o_00];[outv][o_00]overlay=enable='between=(t,0,5)':x=0:y=H-h:shortest=1[outvover];[t0a]concat=n=1:v=0:a=1[outa];