制作手机屏幕数据信息MG动画，然后合成到实拍手机视频素材中，包括跟踪和调色等

Here, Andy Needham shows how to take the app mockup created in the companion course, After Effects: Creating a Mobile App Interface, and composite it into live-action footage of a smartphone. The final product is an animated promo video that helps visualize how the app will be used on a real device. Andy also covers storyboarding, tracking, keying, color correction, and a few audio tips. By the end of the course, you’ll have more experience with the screen replacement workflow in After Effects and have a web-ready deliverable ready to share with the world.