When a Vimeo video is used as a row background, there is no setting to block the Vimeo tracking cookies - Vimeo themselves say this needs set within the embed code for the video, however this isn't something we can do for a row background video, as it isn't using embed code we can change:
Append ?dnt=1 or &dnt=1 to the end of the video source URL inside your HTML iframe tag.
How can we implement this within PageBuilder for Vimeo row background videos?