@spikespiegel
Yes, before creating the topic I updated libffmpeg.so.
link: https://github.com/iteufel/nwjs-ffmpeg-prebuilt/releases/
opera path: /usr/lib/x86_64-linux-gnu/opera/lib_extra/
Apparently, by removing the libffmpeg.so file from the /usr/lib/x86_64-linux-gnu/opera/lib_extra/ directory, the problem did not occur again. This implies not being able to watch some youtube and whatsapp videos.