There's a 64MB game boy advance cartridge with shrek on it [1]. Looks pretty horrible [2]. But the GBA only has 16KB fast / 256KB slow RAM, and a 16MHz CPU.
Video resolution: 128x72, hahah. Late 90s RealPlayer postage stamp video is back! To its credit, that whole movie is probably smaller than RealPlayer itself was.
[1] https://archive.org/details/Shrek-Video-GBA [2] https://www.youtube.com/watch?v=CyOfPZQl4MI