Directly Uploaded Video Submissions
The File Upload field in your Photo/Video Contest can accept .mp4, .mov, and .WebM files (up to 250MB) and directly uploaded videos that are approved are visible/playable in your campaign’s gallery. These files can also be downloaded from your Uploads export. For longer videos or file sizes larger than 250MB, we recommend the hashtag entry method found in the Classic Campaign Template.
Hashtag Video Submissions
Hashtag video submissions must be entered via hashtag entry on Instagram. Stories, boosted posts/ads, or temporary posts are not supported in Photo/Video contests, but Reels and standard posts can be accepted.

When submitted correctly and approved, that video submission will display and be playable in the Gallery.
