This device doesn’t do video but for a computer like device you’d want it to drive a 1920x1080 display, which is about 6 mb of framebuffer already. And then you need content to put on it.
This definitely isn't the sort of programming where you can just wastefully allocate ram for a full uncompressed frame buffer, but that also opens the door to sub-frame latencies.
(which would allow using the screen at high resolution for, say, game graphics -- actual video is a different story)
- https://excamera.com/sphinx/store.html#gameduino-3x-dazzler-... - https://www.adafruit.com/product/4984