I want to Opera browser stable version. But there's a problem. Opera can't play on facebook but play videos on other websites (Youtube and Udemy).
Opera can't play only when logged in my Facebook account. Opera, when I'm not logged in my Facebook account. plays all videos on Facebook. But Chrome/Chromium browser plays videos in my Facebook account and other websites.
I copied /usr/lib/chromium-browser/libffmpeg.so file to Opera install directory.
Which Chromium version did you use to get libffmpeg.so
If it was 71, try using the libffmpeg.so file from Slimjet 21 or Chromium 70. Slimjet 21 is easy to find, Chromium 70 is not easy to find...