What video duration converts best on Amazon listings?

Amazon's own data and third-party studies (Jungle Scout, Helium 10) show: 30-45 seconds is the sweet spot for main image block videos. Shorter than 20 seconds feels like an ad and has lower engagement; longer than 60 seconds sees drop-off in completion. For A+ Content video modules, 15-30 second clips work best because they are contextually embedded among other content. Key structural formula for a 30-second video: 0-3s hook (product hero shot with dramatic angle), 3-12s feature showcase (3 features x 3 seconds each with text labels), 12-22s in-use demonstration (lifestyle context showing the product solving a problem), 22-30s closing (brand logo + product family shot). AutoAGC's 'Amazon Conversion Video' template pre-bakes this structure - you just enter the 3 features and 1 use scenario, and the AI assembles the full timeline.