Live TV Aspect Ratio on UK Freeview

Just trying out channels. Have the DVR server on a Mac mini and while using AppleTV all looks good when I try and use live TV via the web on a Mac the aspect ratio is always wrong.

Is there someway to fix ?

Thanks

You could try a different browser maybe. I don't think we can control how the browser renders the video aspect

Tried Safari, Chrome & Brave, with the same.

No setting to stretch it ?

Ah though see I can install the iPad / iOS app and that works fine.