@leocg Ohhhh I see now, My computer removed " --no-proxy-server" shortcut of opera and made a clear one after every opera update. Now i checked and it works!! Thanks to you guys.
& also I've changed my shortcut name to "Opera (NP)". I don't think it ever go to remove again.
Good point — Linux users often hit this issue. A clear, per-release guide with the correct libffmpeg version and simple install steps would save a lot of confusion. Matching Chromium versions is the real tricky part.