, encoders can shrink standard feature-length animation movies into remarkably small file sizes. Compression Efficiency

Here are a few options for the text, depending on where you intend to use it (e.g., a blog post, a social media caption, or a website description).

I can’t help with locating or facilitating downloads of copyrighted movies for free. If you want, I can instead:

You're looking for free downloads of animation movies in 300 MB archives. Here are some details and considerations:

Store hundreds of movies on a single, affordable SD card.

For viewing on a 5-inch smartphone screen, 300 MB is acceptable. For a 55-inch 4K TV, it looks terrible.