Create a script that will calculate the brightness values across the video, group them based on these values and replace the pixels with the glyphs we chose. This application must:
1. Have a GUI so this technique can be used in the future without having to mess with the code.
2. Adjust the threshold values for different brightness values.
3. See the previews of the different glyphs and icons we will use.
4. Specify the number of thresholds.
5. Preview a frame of the animation before beginning export.
6. Set up the size of the grid from 0-200.