KB4530684

Looking on the net, it seems that the update can be a problem for some. It's not installing for a lot of users or taking forever to install. I saw one user where it broke Chrome in some way. A few others report that it causes lag on Youtube in Chromium browsers. And, there's of course your issue where it breaks h.264 support.

It's possible that the update failed to install properly for you and reinstalling the update, where it installs properly if you're lucky, might fix things. Up to you if you want to try or just leave things alone for now since they're working, and wait till the next update.

Thanks for all the help:)

You can also do standalone installations of older versions of Opera to see if you can find out when things stopped working in Opera. Of course, if it's a Windows issue, the older versions of Opera and Opera Developer aren't going to play the videos either. But, you can do some testing with different versions to better confirm whether it's a Windows issue or not.

Note though that when doing installations of older versions, you have to do a trick to prevent them from automatically updating. In short, as soon as Opera launches after install, close it as fast as you can. Then, in the Windows Task Manager (have it open already), kill the Opera autoupdate process for the standalone installation. Then, in the standalone installation folder (whatever you named the folder in "options" in the installer), go into the version folder and delete "opera_autoupdate.exe". Then you'll be able to test with those versions without them updating.

Also, if you know someone else that has Windows 10, see if you can test Opera on their install to see how things work.

But how can you explain it working on Opera about a week or two ago and now not?

I can't unfortunately. In Windows, you could goto "Start -> settings -> Update & Security -> Windows Update" and click on "View update history" to see if you can find an update with a date around the time you think this starting happening. If you find one around the date, you can research that update. Maybe it hoses something and some other users are experiencing the same thing and they have a workaround/fix.

UK

Mine is US and works fine. I wonder if something changed with h.264 licensing in UK locale. I doubt it though.

In Chrome, goto the URL chrome://version. What's the full value for "OS"?

Okay. I see nothing in the Windows Feature list that needs to be turned on. And, since things don't work in Vivaldi either, it's definitely your Windows 10 that's messed up.

Ok I understand that. But how can you explain it working on Opera about a week or two ago and now not? The system was installed about a year ago. (Tried system restore no results after restore everything refuses to even launch)

Is your Windows 10 locale English? If so, is it US English or UK English?

UK

Note that things work fine in Chrome because Chrome has built-in support for h.264 and doesn't rely on the OS.

If I didn't already suggest it, create a new user account on Windows, log into it and try in Opera there. When you're done testing, you can delete the user account.

Any difference?

Done It no change in behaviour.

Any security software installed? (like Bitdefender, Sandboxie, anti-virus, firewall besides the Windows one)

Nothing new

Any difference?

Any security software installed? (like Bitdefender, Sandboxie, anti-virus, firewall besides the Windows one)

Is your Windows 10 locale English? If so, is it US English or UK English?

Note that things work fine in Chrome because Chrome has built-in support for h.264 and doesn't rely on the OS.

@CrispinBCH said in Problems with Videos:

Installed K-Lite Codes Pack no effect

Unfortunately, those are DirectShow filters. They help for Windows Media Player, but they won't help for apps that use the Windows Media Foundation.

I got a notice I cant install it on my windows.!

Okay. And, I see from the pic, it doesn't show you have "N" or "Enterprise". That almost certainly means the issue is in your Windows 10. To test, test in Vivaldi. If things also don't work in it, then it's definitely your Windows 10.

Tested it. it Is not working.

In Windows 10, goto "start -> settings -> apps -> apps > features -> "options features". Make sure "Windows Media Player" is still installed. Also, click "add feature" and see if there's anything in the list that stands out (like something to do with media).

There was another user recently that had your exact problem. I'll see if I can find the thread.

Ok Thx

In Opera, goto the URL opera://settings/system, disable hardware acceleration and restart Opera. Does that fix it? (Do all the video tests again too.)

Tests done after diable

http://html5test.com/s/f94ea9494e48224f.html

i see the issue the browser on the left is opera and on the right chrome.

Installed K-Lite Codes Pack no effect

Unfortunately, those are DirectShow filters. They help for Windows Media Player, but they won't help for apps that use the Windows Media Foundation.

I got a notice I cant install it on my windows.!

Okay. And, I see from the pic, it doesn't show you have "N" or "Enterprise". That almost certainly means the issue is in your Windows 10. To test, test in Vivaldi. If things also don't work in it, then it's definitely your Windows 10.

In Windows 10, goto "start -> settings -> apps -> apps > features -> "options features". Make sure "Windows Media Player" is still installed. Also, click "add feature" and see if there's anything in the list that stands out (like something to do with media).

There was another user recently that had your exact problem. I'll see if I can find the thread.

That explains a lot. You're lacking h.264 support in general, h.264 MSE support, and widevine support. That's definitely the cause of the issue.

Installed K-Lite Codes Pack no effect

This implies that you either have an enterprise version of Windows 10 Pro or an N version of Windows 10 Pro. If the latter, you need to install https://www.microsoft.com/en-us/software-download/mediafeaturepack for things to work in Opera.

I got a notice I cant install it on my windows.!

Another sign of that's the case is if Windows Media Play doesn't play h.264 files.

If you don't have an "N" or "Enterprise" version of Windows 10, I would think your Windows setup is broken.

Do a test to make sure it's not something with your Opera profile. Download the Opera installer, launch it, click "options", set "install path" to a folder named "Opera Test" on your desktop, set "install for" to "standalone installation", unchecked "Import data from default browser" and install. Test in that Opera, but do not install any extensions and do not enable Opera Sync.

Done it the Stand alone doesn't work as well

Also, in that Opera, goto the URL opera://components and update Widevine.

Widevine is up to date Version: 4.10.1582.2

If you can't get that Opera to work either, there's something that needs to be fixed on your setup of Windows 10.

But not so long ago everything was ok everything worked fine now it doesn't. Might You guess what can be the issue on win 10?

Also, in that Opera, goto the URL opera://components and update Widevine.

If you can't get that Opera to work either, there's something that needs to be fixed on your setup of Windows 10.

This implies that you either have an enterprise version of Windows 10 Pro or an N version of Windows 10 Pro. If the latter, you need to install https://www.microsoft.com/en-us/software-download/mediafeaturepack for things to work in Opera.

Another sign of that's the case is if Windows Media Play doesn't play h.264 files.

If you don't have an "N" or "Enterprise" version of Windows 10, I would think your Windows setup is broken.

Sending the results

Also

http://html5test.com/s/099f98494b425380.html

just to clear things up a bit..

1st my problem had nothing to do with n e Flags i got Enabled..

2nd my problem was old desktop icon that had sum old switches i was test 'n a while back in the target box.. lol

3rd the old switch worked in dev but not in stable.. so to me that switch is faded out in dev but still active in stable version..

also had that switch in chrome & chromium when removed they play the vids also..

Does the video at https://bitmovin.com/demos/drm play for you? What's it say below the video for MSE and EME? What does https://html5test.com/ show for video support and streaming video codec support?

Chrome Works