My guess is because there’s a lot of ways of making things digitally and it’d need to be a really complex codec. On the other hand, deep-learning based compres

My guess is because there’s a lot of ways of making things digitally and it’d need to be a really complex codec. On the other hand, deep-learning based compression with autoencoders or something similar is pretty promising, since it can learn the constituent elements in a more general way, independent of what program was used to create it.