New comment by w1kl4s on void-packages repository

https://github.com/void-linux/void-packages/issues/29941#issuecomment-812266555

Comment:
Simply running `ffmpeg -i something.mp4 -c:v libvpx out.webm` does it for me - works when downgraded to 1.9, spits out ABI mismatch when upgraded to 1.10.