Youtube Advertising Be seen where everyone is watching and only pay when they show interest. Where the world chooses to watch When you get to know the ones who matter most to your business, you can reach them with more relevant messages. TrueView in-stream ads A skippable, online video ad that appears before the main video. Bumper ads A short, 6-second video ad that works well on mobile. Use this format when you’d like to reach people with a short, memorable message. TrueView in discovery ads Use this format to show up on YouTube search results, on the YouTube homepage, and alongside related videos.