A tool that allows you to create a filtergraph visually without having to remember the thousands of options available for each filter.
Find the webpage at [https://angyongen.github.io/ffmpeg-filtergraph-generator]
copy the text from [https://raw.githubusercontent.com/FFmpeg/FFmpeg/master/doc/filters.texi]
use tools.html to create a filter list json
prepend var filterList= to the json and put it inside filterlist1.js