(fuyin) ➜  /tmp ffmpeg -hide_banner -v error -i red.mp4 -vf drawtext="fontfile=SentyTANG.ttf:fontsize=80:textfile=11.md:x=0:y=0+0*print(th,16)" -vframes 1 -f null -


[AVFilterGraph @ 0x7fecccc00ae0] No such filter: '16)'
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:0