FlipBook MotionVector Material Function doesn't work with non-uniform Flipbooks like 4x2

Development Rendering
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  • If you have a flipbook containing e.g. 4x4 images, it’s OK to use and play the “FlipBook MotionVector”-Node.
  • But if you have a texture containing a non-uniform amount of images e.g. 4x2 the “FlipBook MotionVector”-Node doesn’t work correctly anymore. It will show the images in this order (and then loop): 1…2…7…8
  • Note: using the standard “Flipbook”-Node (without motion vectors) everything works perfectly fine.

More info + example GIFs here: UE4's <Flip Book Motion Vector> Material Function works well?(Image Fixed) - Real Time VFX