ELI5: how does AI video generation work

AI video generation is like teaching a computer to draw a flipbook, but instead of drawing each picture by hand, it learns from tons of other flipbooks.

Imagine you have a box full of Lego bricks. These bricks are like the basic parts of a video – things like colors, shapes, objects, and even how things move.

Now, pretend you showed a computer lots and lots of videos, like cartoons, movies, and even home videos. The computer looks at all those videos and learns how the Lego bricks fit together to make different scenes. This learning process uses something called a neural network, which is like a really complicated recipe book.

Here's how it works step-by-step:

• Learning from Examples: The AI looks at thousands of videos and figures out patterns. For example, it learns that cats often have fur, whiskers, and meow. Or that when someone runs, their legs move quickly.
• Understanding Prompts: You tell the AI what kind of video you want, like "a cat chasing a mouse through a garden." This is your prompt.
• Building the Video: The AI uses its "Lego brick" knowledge and the patterns it learned to build a new video that matches your prompt. It figures out what colors to use, what objects to include, and how to make them move realistically. This process is often called diffusion.
• Putting it Together: The AI combines all the "Lego bricks" it chose into a final video.