mp4 videos not showing on page after recent updates

[misterrr]

misterrr @leocg last edited by misterrr

@leocg Also, if DNS blocking were active, videos would be blocked regardless of Opera adblocker enabled or disabled.

[burnout426]

burnout426 Volunteer last edited by burnout426

Not having any issues with videos playing on the site with or without Opera's adblocker in Opera 128.0.5807.77 on Windows 11 23H2 for what it's worth.

[Mlipka]

Mlipka Opera last edited by

@misterrr I'm glad the issue doesn't exist in version 127.

The problematic version 128 was available only for a few days. We can't simply force users to roll back by having them reinstall it.
If you download Opera today, it will be version 127.

Thanks to everyone for all the details and for investigating together

[misterrr]

misterrr @burnout426 last edited by

@burnout426 Yes, but I think that in order to be able to play the videos with adblocker on, you have to add the site to exceptions. In Opera 127 that was not necessary.

[misterrr]

misterrr @Mlipka last edited by

@Mlipka Ok. I hope that in the next Opera update the problem will be solved. I will keep you informed.

Thank you all!

[burnout426]

burnout426 Volunteer @misterrr last edited by

@misterrr I didn't have to in 128.0.5807.77 for what it's worth.

[misterrr]

misterrr @burnout426 last edited by

@burnout426 So, to summarize, until now we have three behaviours in Opera 128:

• @leocg: with ad blocker on: video doesn't even show, its space is blank. With ad blocker off, I got a Media Element Error: Format Error message
• @burnout426: video ok / no error
• @misterrr: with adblocker on (and no site added to exceptions): instead of video I get a black frame with no video / with adblocker off (or site added to exceptions): I get no error, the video plays but with unwanted behaviour

Strange...

[Himmelsschlingel]

Himmelsschlingel last edited by

Are these issues are related in a way, as they're affecting something in the resolving of DNS?
https://forums.opera.com/topic/88188/opera-seems-to-break-my-internet
These problems also only appeared with version 128, making it nearly unusable for me.

[Mlipka]

Mlipka Opera @Himmelsschlingel last edited by

@Himmelsschlingel

I can't cofirm if issues are connected but highly recommend switching to 127.

128 has been withdrawn.

If you download fresh installer, it will update to 127.

[Himmelsschlingel]

Himmelsschlingel @Mlipka last edited by

@Mlipka I'm afraid, it didn't. It brought me: Opera 128.0.5807.77

[misterrr]

misterrr @Mlipka last edited by

@Mlipka In order to avoid a fresh install, and to update automatically to all users, it would be possible to publish an update that in fact is the last working version (127), obviously with a version number greater than the current non-working version?

[Mlipka]

Mlipka Opera last edited by

Ok, we got into little version chaos, let me clarify.

1. Problematic 128 was released at the beginning of the march, it was withdrawn after a day but some people got it.

2. During the rest of the March there were several new versions of 128 with fixes. Latest this Friday (13.03.2026).

3. Yesterday (18.03.2026), we release version 129.

Apologies for confusion.

Anyway, please update browser manually to 129, if it didn't automatically yet, and check reported issues.