My first thought was to see if ffmpeg could do this. Unfortunately it seems like not currently [0] but what caught my eye is a mention that "the VST SDK has a l

My first thought was to see if ffmpeg could do this. Unfortunately it seems like not currently [0] but what caught my eye is a mention that "the VST SDK has a linux command line VST Host you can compile" which might be all you need. [0] https://superuser.com/questions/1661505/naive-query-vst-plugins-in-ffmpeg https://superuser.com/questions/1661505/naive-query-vst-plug...