I use Unity to create augmented reality app via vuforia, I want to replace the 3D object above the image target by playing a video playback. how can I do that?
Login to the Vuforia developer portal and select Downloads -> Samples and scroll down to Advanced Topics. Download the Unity Package listed in this section, it has a sample scene of how to do video playback on an image target. https://developer.vuforia.com/downloads/samples