Point your camera at the print. Whatever is behind it right now will play.
Three things usually fix it:
A scan is an entrance, not a gate. Everything behind this print is on a page you can open right now.
Open the page Or allow the camera in your browser settingsThis link isn't tied to a piece or a drop. Head back to the shop to find something real.
Back to shopOn a phone this plays on the shirt itself, anchored to the print. Here it is just a video — same layer, none of the trick.