Quote:
Originally Posted by Desbreko
I think you underestimate the amount of bits it takes to encode highly detailed backgrounds, especially in shows with lots of camera movement. It's certainly more than 5%.
Even disregarding extra detail, though, I'd say that you'd be looking at a 50% increase in file size at the very least to maintain the same quality when upscaling a 1080p anime to 4K. Increased resolution, even if it's not any more detailed, still eats a ton of space.
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That still depends on compression performance.
If they were to think outside of the box, they can adopt Vector format for animation, something similar to Flash. In that case, resolution becomes irrelevant.