system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do .gif images in a browser often take longer to load each frame than videos do?
gpt
GIF is a very inefficient format. Each frame in the animation which makes the film is stored intact.

Video formats only send occasional "key frames" intact, the rest of the time they just update the differences from frame to frame. Much less data for higher quality.