Thumbnail featured YouTube video not showing on index

Hello,

I have set some YouTube video as featured video for example here : https://econoflash.com/investissement-a-long-terme/ with this setting : https://app.screencast.com/PXMH90DvxI1Ib

Yet the features video is displayed on the posts, but not on index :

Here is the home page https://econoflash.com and a screenshot : https://app.screencast.com/1tKysO1B17E1x.

However, strangely, one video’s thumbnail is corectly displayed on home page : https://app.screencast.com/JBv09IeGMvYzd

Here are my Light Speed cache settings : https://app.screencast.com/2r57pJuvsyHaN.

Do you know what setting I shall implement so that ALL of the videos’s thumbnail are displayed on the index pages ?

Thanks in advanced.

Hello @anamaria, thanks for your help.

The video thumbnails are not being displayed even if I disable Lite Speed cache.

I don’t wish to delete any cache file, as I guess these files are essential for speed.

Perhaps you could have a closer look at the code, let’s take this index for example : https://econoflash.com/category/definitions-economiques-simplifiees/lexique-economique/; as you can see one video thumbnail can be displayed, the other can’t.

There is surely a reason to this, any idea ?

Thanks in advanced.

For information I have turned off the Theme Lazy Load https://app.screencast.com/5PZx1krACD8Gm, but the features video thumbnails are still not showing up.

I have also increased the memory limit to 512 Mo.

Thanks, I have opened a thread on Ligth Speed forum (https://www.litespeedtech.com/support/forum/threads/features-video-thumbnails-are-not-displayed.21715/) I am waiting for their answer and I will comeback here.

Hello @anamaria

It looks like it’s not the LiteSpeed plugin, because the thumbnails still aren’t being displayed when I deactivate the plugin.

I have also installed Regenerate Thumbnails, but with no success.

I have deactivated all plugins to detect a conflict, but with no success.

I have turned off the Theme Lazy Load, but no success.

However, when I check the console for the YouTube video thumbnails that are being displayed and the others that are not, I find something :

The thumbnails that are being displayed are WEBP :https://app.screencast.com/nldDOPK91NWS0

The thumbnails that are not being displayed are PNG : https://app.screencast.com/LpCvaWVIn1Gdv

Could that be a lead ?

Thanks in advanced.

No image optimizer, just Performance Lab : https://make.wordpress.org/performance/. But I already tried to deactivate it, without successs.

Many thanks for your help, message sent with credentials.

I have solved the problem : the key was to indicate the YouTube Chanel to Yoast plugin ;

Got to Yoast/General/setting/site representation/ then add the YouTube URL : https://app.screencast.com/UTr5rzX6lzR8X.