Stories appear as standard Nativo In-feed Units on mobile web publishers. An indicator is added to the top-left corner of the preview image to indicate that this is a story experience. Stories is easier to execute with simple images and videos and is fully immersive, with no content landing page (CLP).
Creative Assets
Stories require at least 1 video or image.
Images
Images remain on screen for 6 seconds. Animated Gifs are supported (up to 6s).
Aspect Ratio: The default asset requirement is a vertical 9:16 asset. Assets that don’t fill the screen on a given device will be resized with the empty space filled in with black, to keep the focus on the asset.
File Size: 3MB Max
Image Format: PNG, JPG, GIF
Video
All raw video files are supported (YouTube is not supported).
Video Ratio: 9:16 to 16:9 to 4:5
Video File Size: 2GB Max
Video Format: MP4, WEBM and MOV (Apple ProRes not supported)
Video Length Minimum: 1 second
Video Length Maximum: none
Resolution: Upload the highest resolution video available that meets file size and ratio limits
Video Captions: Optional but recommended
Video Sound: Optional but recommended (enabled by default)
In-feed Unit
Preview images and headlines are required for the In-feed unit.