H265 media files in embedded filebrowser

Hi

I have HA in a docker environment so I’m integrating filebrowser (https://filebrowser.org) - which I only use to browse and play my security cameras recordings - using a webpage card or iframe. In both case I have the issue: either from safari or the iOS app I cannot play the h265 video files of my recordings. I don’t understand why the same files play just fine if I access the filebrowser webpage directly using safari.

Anyone have idea on why and what can I do to solve?

Thanks

anyone have any idea?