How to use animated GIFs on Image Sampler

I always wanted to play with real-time input in Grasshopper. But my scripting skill is not that enough.
My second approach is stacking all the data in the series, and partitioning the data per each step.
In short, I combined the images inside GIF horizontally, evaluated the image to change U coordinates.
The video is more clear than my explanation. Thanks for watching video!