Video link covers are an Instant Articles feature that allow videos placed within the header of an article to autoplay in the feed unit. Video link covers are available inside Instant Articles as well as News Feed, Timeline and anywhere else there is an Instant Articles unit.
Once publishers opt in, this feature will be applied to all future articles published from their Page that include video headers.
All headers must fit 4:3 aspect ratio and any image or video is automatically cropped to that size. Videos included in headers will play silently but with an audio meter.
Video link covers will not appear for posts that have been boosted or sponsored.
Currently this feature is only available for iOS.
Pages are opted out of video link covers by default and can opt in from Creator Studio. Opt in is currently only at the Page level and Publishers cannot opt in to use this feature on individual posts.
To opt-in to this feature:
1) Go to the Creator Studio on your Page.
2) Click on Links under the Published or Pre-Published section in the left hand navigation, then click on the gear icon on the right.
3) Scroll to the News Feed Video Preview section and turn the switch to on. This will apply the link cover to all future articles that include a video header.