[QUESTION] Size limits

[rbaudrillard-a2mac1]

Hi, I have a question for you guys,

Context: I'm trying to integrate SkiaSharp to normalize images/generate thumbnail that our clients upload to our website
We can have really high definition images over 20k*20k in jpeg or png
For now, we know we can not go over approximatively 537 Megapixels otherwise libraries like system.drawing and browser like chrome cannot process/display it.

We wanted to re-encode uploaded images to webp/q80 to save some extra space on disk
But the limit seems to be divided by 2 (268MP) when using webpformat

I found the limitation of 537MP (Int32.MaxValue / 4) in the code but couldnt understand why 268 is my max at this point ?
What am I missing ?

Here is my code:
When using Webp it doesnt work over 268MP
When using Jpeg I can go up to 536MP
I added fake test images

public async Task NormalizeAsync(Stream sourceStream)
{
var inputStream = new MemoryStream();
var outputStream = new MemoryStream();

await sourceStream.CopyToAsync(inputStream);
inputStream.Position = 0;

using var image = SKImage.FromEncodedData(inputStream);

using var data = image.Encode(SKEncodedImageFormat.Webp, 80);
data.SaveTo(outputStream);

outputStream.Position = 0;

return outputStream;

}