15 Seconds: Engagement The shortest ad slot is a great way to quickly reach a large number of people and entice audiences to take action after your video. 30 Seconds: Awareness Using a full 30-second video lets you get your brand message across clearly. It drives brand awareness through views and completions. 60 Seconds: Storytelling A longer video is a storytelling opportunity. Dive into the mission of your brand, and how you’re changing the world. It’s important to use CTAs throughout a longer video.   Having a mixture of at least one of each is best to capture your audience at different points of their customer journey.