OCR A level computer science coursework

Hi, I'm on the evaluation stage of the coursework where I need to evidence what I've done. I was wondering whether I'm able include gifs in this stage. I've made a platformer game and I need to show that the player momentum and friction system is working, but it's kinda hard to show this with only screenshots. If I were to add gifs, my big concern is that they may not load correctly for the examiner.