ah ok, thanks for explanation @Pppery

I noticed they were frequent contributors to contributionscores extension when I look at the commits on github. I assumed they might be interested that the extension breaks after 1.42. If I got that wrong apologies, didn't mean to waste anyone's time.

Tagging Siebrand Mazeland and Raimond Spekking for visibility.. can't find Tim Laqua on phabricator to tag him..

correct the solution which had previously worked no longer worked after updating to the latest stack, I found a workaround for this by changing the config.

Finally got this working with ForeignDBViaLBRepo, will stick my config here incase any is searching and hits this..

Did some additional debug, if I used the simplest form of commons:

$commonsUrl = "https://mediapool.devops.supportlabs.dell";              
$commonsName = 'mediapool';

Didn't have much time to test this today but when I set up the configuration to use the API instead I get a blank thumbnail. but the video plays (btw updated to 1.39.2)

On our own commons images and vidoes work correctly, scaling thumbnailing everything.
Also if a video is uploaded to the test wiki everything works correct scaling thumbnailing etc...

I certainly see your point there, but I keep paring the config back and really can't find an issue.

@Reedy when you attempted to reproduce this issue did you set up a separate commons wiki?
I have no issue when using instant commons.

@Reedy would you be able to share your local settings from your dev box? If so I'll try and figure out what I am doing differently to expose this.

EDIT: Corrected config and reproduced again and provided debug log. Confirmed only videos on commons wiki affected.

This looks very similar to:
https://phabricator.wikimedia.org/T272328

I have an internal alpine docker image built for mediawiki.
This issue only appears in our build after updating php to 8.1.
If I go back to php 7.4 the issue disappears.
$wgUploadDirectory is /wiki-shared/stagingwiki8/storage/images/

thanks for help, I see where I went astray now..

The minimum config I needed to reproduce this issue was:

Not in front of PC to test currently. But looking out our private gitlab I see this config:

Thanks for picking this up I’ll attempt to reproduce with a minimal LocalSettings config and post everything here.

Actually yes, pity I didn't search first.. we can close as a duplicate.. should I just close it?

Thanks @Osnard, I can confirm that patch resolves the issue we experienced, much appreciated!

Thanks for taking a look. In case it helps in root causing this, it was these comments which gave me the clue to look at groupsync:
https://www.mediawiki.org/wiki/Topic:Vn9jblaqr69fim14