You can use handbrake to convert webm to any format https://handbrake.fr/
 
There are also lots of free converters from webm to mp4, just google search it for results.  

 Yeah found a few. It would be nice to have it just export into a ready work file 

 its on the issues list, but need to find someone to work on it. too many things to do and not enough free time. 

 Totally understand that. Feel the same, i appreciate what you do 🫂