[SOLVED] Hide non-informative video (accessibility)

Good morning

I use the Gym template and Joomla 4.4.5
I would like to hide the welcome video for blind people because it is an ambient video which does not provide useful information.
I used the "aria-hidden" attribute to hide the Iframes from Google-maps (the address in text form being provided, the Iframe is not obligatory for understanding): is it possible to do the same for video?
And where should I enter this code (I use UIkit 3 Slideshow to display the video)?

See: www.ideetheque.fr


Thanks in advance
Sincerely

No, this is not possible.