Thanks a lot to both @appdevsw and @bombacha for the fix and the explanation!
It works perfectly now!

Hi all

I'm running Opera 53.0.2907.68 stable on a Ubuntu 18.04 LTS (x86_64; GNOME) machine.
My problem is...
Every time a watch a video (youtube, facebook, other websites) it plays mostly OK, but at times the image (not the audio) freezes for about 1 second.
This happens many times during the same video.
Not enough to make it unwatchable, but it's definitely annoying.

What can I do to fix this?

Thanks for the help.

It seems to still be working properly on main Opera (Version:69.0.3686.57).

This problem I had with Chrome, but not with Opera... until the latest Opera Dev update (Version:71.0.3749.0) .
When I am in Google Docs and try to Ctrl+C or Ctrl+X or Ctrl+V nothing happens.
Other shortcuts like Ctrl+B for Bold work as usual.
What happened?
Is there a fix or a workaround?

SOLVED (sort of)

The problem has now appeared for me too in Opera 66 for Ubuntu 19.10.
My latest update is 66.0.3515.44

I solved this by... switching to Opera Developer
Installed it.
Current version is 68.0.3581.0
Synced to my normal Opera account.
BAM! all the passwords that until recently were saved in Opera 66 (but were NOT displayed, as if Opera had no passwords saved) appeared in Opera Dev. It saves them, it automatically fills forms, the works.

I might eventually want to go back to the "stable" version of Opera, but until this problem is fixed I'll happily stay on the Dev channel.
On a side-note, might be nice for Opera account to be able to also sync installed extensions

Thanks a lot to both @appdevsw and @bombacha for the fix and the explanation!
It works perfectly now!

I'm trying to apply @appdevsw fix but I can't find the Opera folders in Ubuntu18.04

A behaviour I have noticed... whenever the stutter happens, the video (not the audio) is frozen for about 3 seconds, consistently.
But if I move the mouse, the frozen image instantly resumes motion.

What could this possibly mean?

Hi

I already had the latest ffmpeg extras, that's why videos work flawlessly both in Chrome and Firefox.

My machine runs an Intel HD Graphics 620 (Kaby Lake GT2) paired with a Nvidia GeForce 940mx (NV118).
The drivers I am using are the Nouveau ones.

Hi all

I'm running Opera 53.0.2907.68 stable on a Ubuntu 18.04 LTS (x86_64; GNOME) machine.
My problem is...
Every time a watch a video (youtube, facebook, other websites) it plays mostly OK, but at times the image (not the audio) freezes for about 1 second.
This happens many times during the same video.
Not enough to make it unwatchable, but it's definitely annoying.

What can I do to fix this?

Thanks for the help.