I have just installed Ubuntu MATE 20.04 and I'm loving it!! Everything is running way faster than in my previous install (Ubuntu MATE 16.04)!! Let alone this new release is a lot more beautiful and confortable to use than the last LTS!
But I have been facing this problem since I installed 20.04: There is no thumbnails for ogv files. I have ffmpegthumbnailer installed and I also deleted all the stuffs in "~/.cache/thumbnails" but nothing changed. No thumbnails for ogv files.
Your help is very much appreciated!