OptionalaltOptionalavgSmall image, safe for grid thumbnails at any kind.
Medium-res image; for video this is the poster frame.
Best-quality still (photos) or best-quality poster (videos).
OptionaldurationSeconds. Videos only.
OptionalsourcesPlayable renditions. Videos only.
Attribution link back to the provider's page for this item.
Dominant color, useful as a placeholder background while media loads.