Hi @H_H_ng, you can see this Upcoming features preview: disable shadow casting and video textures - #17 by wojtek
For more accurate procedure follow this
- choose the video that you want to show
- extract a picture to use it like a texture
- apply that texture into the screen of the TV (in modeler software) and resize if is necessary
- export model into shapespark
- inside shapespark edit window choose materials tab above,
6.then, pick the tv screen material - change the material for a movie file.
- check results
you can see this video