I just saw this in the latest Kunker auctions. They now have a video viewing in addition to the high-resolution pictures. I think that is a pretty neat idea and should continue after the COVID19 lockdown. https://www.kuenker.de/en/auktionen/stuecke/337-338?filter=allehighlights
Videos are nice to have and it's really helpful when toning or luster is involved (as both can be harder to truly show in a photo).