Quantization in transformation space. I could explain it in enough detail for you to recreate the codecs I’ve written, if I thought you were actually listening.

In the next reply, I’m going to print out your entire comment history, clip each word into a hat, and pull them out at random, to see if you still respond with equally nonsensical posturing about JPEG.

In the reply after that, I’m going to copy-paste that posturing, but change a few letters.

Everyone but you can see out the difference in these concepts.