Hello,
I am trying to solve this problem with my Ubuntu 20.04 LTS. all above suggestions don't work with me.
I have the chromium codecs installed and I can find them in my /snap/chromium.....etc folder. I also can find the opera installed libffmpeg.so in my /snap/opera/current/user/lib/x86_64-linux-gnu/opera folder.
problem is I cannot remove the not working file since it is read only. Therefore i also cannot link the new one to the old one.
I don't know how to solve this. (FYI I am a kind of newbie on this linux)
Please help. Thank you.

@xZero Sorry, I did, but still no go.
I can find the original ffmpeg.so in the opera directory.
I also have your ffmpeg.so . Even when I login as admin, or sudo in terminal, the directory is "read only" and I cannot move the file.
I tried to use opera every few years, but always the same. Nice layout, clean but not suitable for drm broadcast.

@xZero Sorry, I did, but still no go.
I can find the original ffmpeg.so in the opera directory.
I also have your ffmpeg.so . Even when I login as admin, or sudo in terminal, the directory is "read only" and I cannot move the file.
I tried to use opera every few years, but always the same. Nice layout, clean but not suitable for drm broadcast.

@annevance Indeed I have more video playbacks, but the live tv broadcasts which I watch with the VPN of that country still don't work on Opera, giving a DRM error.
When this is not solved the browser is useless, unfortunately.

@zarathustra-f90 said in Solving the problem of the Opera browser with video playback in Ubuntu and similar distributions (Linux Mint, KDE neon):

sudo ln -s /snap/chromium-ffmpeg/current/chromium-ffmpeg-98516/chromium-ffmpeg/libffmpeg.so /usr/lib/x86_64-linux-gnu/opera/lib_extra

Thank you for your help.
I tried to follow your instructions, but I had to adjust the location of opera.
I installed thru snap and therefore /usr/lib/x86_64-linux-gnu/opera did not exist.
It was installed in /snap/opera/current/usr/lib...etc
Finally I removed opera and reinstalled. Now it was located in /usr/lib/....
Then I followed your instructions to make a new directory and linked the lbffmpeg file.
Result: It works !!
Now I can use the beautifully designed Opera browser.
Thank you foryour help.

Hello,
I am trying to solve this problem with my Ubuntu 20.04 LTS. all above suggestions don't work with me.
I have the chromium codecs installed and I can find them in my /snap/chromium.....etc folder. I also can find the opera installed libffmpeg.so in my /snap/opera/current/user/lib/x86_64-linux-gnu/opera folder.
problem is I cannot remove the not working file since it is read only. Therefore i also cannot link the new one to the old one.
I don't know how to solve this. (FYI I am a kind of newbie on this linux)
Please help. Thank you.