I have a problem with Opera version 70.0.3728.106 on my Ubuntu 20.04 computer. If I try to watch anything on Amazon Prime Video, I get the following message:
Protected Content Error To watch protected content, in the top right of Chrome, click the three dots icon, and then tap Settings > Site settings > Protected content. Under Blocked, tap Amazon.com > Clear and Reset. Refresh or reload the video's detail page, and then tap Watch Now.
The settings of Opera are slightly different than the ones of Chrome, but in any case I have already allowed the Protected Content and I still get the same message. I have other two PCs running Windows 10 and on those PCs I can watch Amazon Prime Video content using Opera without any issue. Moreover, if I use Chrome to watch Amazon Prime Video on my Ubuntu computer I encounter no troubles. Therefore, the problem seems to be in the combination Opera-Ubuntu.
Any idea on what might be the problem?
Opera does not include propietary codecs/libraries in Linux, this worked for me in Debian 10:
[Update]
Sorry, I was not explicit, it is not needed dowload all the repository. In the web page (https://github.com/iteufel/nwjs-ffmpeg-prebuilt):
Regards.
I can confirm placing
libffmpeg.so
from https://packages.ubuntu.com/bionic/amd64/chromium-codecs-ffmpeg-extra/download to/usr/lib/x86_64-linux-gnu/opera/lib_extra/
make Prime video worked on my Opera which isVersion:79.0.4143.22