Have you tried using a Shape 3D set as a plane instead of using an Image Plane node? Else I think there's something about your read node that the 3D system doesn't like, seems like something in that mp4 messes with the stream somehow...
Sander de Regt wrote:What if you put the loaders into the orange input instead of the green one?
Hehe, but the green is the material input, the orange is "scene input", so you can pipe a 3D object into it - whatever that means in regard to an image plane - but that won't take a loader.
*** Pushing pixels, vectors and voxels since 25 years - www.farmfield-vfx.com ***