When I log into netflix and get Error O7355, I run this script. I have Chromium installed as a snap on Ubuntu 20.04 LTS.
#!/bin/bash
DATE=date --iso-8601
cp /snap/chromium/current/usr/lib/chromium-browser/libffmpeg.so /usr/lib/x86_64-linux-gnu/opera/libffmpeg.so.chromium.$DATE
if [ ! -f "/usr/lib/x86_64-linux-gnu/opera/libffmpeg.so.opera.$DATE" ]; then
cp /usr/lib/x86_64-linux-gnu/opera/libffmpeg.so /usr/lib/x86_64-linux-gnu/opera/libffmpeg.so.opera.$DATE
fi
cp /usr/lib/x86_64-linux-gnu/opera/libffmpeg.so.chromium.$DATE /usr/lib/x86_64-linux-gnu/opera/libffmpeg.so
I have had to do this every single time opera updates.