Video-in-banner works with Google Ad Manager through Programmatic Guaranteed
Weight
Combined video + background max 1Mb.
Size and placement
Background image same size as normal display banner, video either 1:1, 16:9 aspect ratio or 980x600 for full Panorama Mega
Video will overlay over background image so depending on video size and aspect ratio message will have to be placed accordingly to not be blocked by the video.
Video can be placed left, right or center for desktop or top, center or bottom for mobile.
Additional info
Video always starts muted. Video controls are optional but can be enabled for interaction.