Video marketplace introduces rigorous moderation system for generated thumbnails

A game marketplace requires video thumbnails to undergo moderation before listings become visible. The platform now generates a small set of candidate frames during publishing and submits them for approval alongside other media. Only approved frames are stored and served as immutable thumbnails, ensuring moderation coverage matches public content. This approach treats poster generation as a state transition rather than an on-demand convenience. The system creates a media manifest tracking each derivative's approval status before publication.