Fix opera cannot played video
Is an issue with ffmpeg.so library, to fix it you need to download the latest version of nwjs and replace the ffmpeg.so library with the one in opera lib folder.
Download latest nwjs ffmpeg library:
On this github repo.
Replace the library:
bash
sudo rm /var/lib/flatpak/app/com.opera.Opera/x86_64/stable/active/files/opera/libffmpeg.so
sudo mv ~/Downloads/libffmpeg.so /var/lib/flatpak/app/com.opera.Opera/x86_64/stable/active/files/opera/Then restart opera and it should work.