Em que formato é permitido gravar os Clips?

The correct answer is "Apenas vertical" (Only vertical) because Mercado Ads Clips are designed specifically for mobile consumption. This format aligns with the trend of short, full-screen videos that prioritize the user experience on smartphones. Using a vertical orientation (9:16 aspect ratio) ensures the video occupies the entire visible area of the device, providing greater immersion and facilitating direct interaction between the buyer and the advertised product. Horizontal formats would not be as effective in this mobile-first context, leading to a less engaging user experience.