It depends what you mean by "better". More advanced video codecs have higher visual quality at lower bitrates, but are more computationally expensive. All of t

It depends what you mean by "better". More advanced video codecs have higher visual quality at lower bitrates, but are more computationally expensive. All of these video codecs use the same underlying ideas of 2d transforms, intra- and inter-frame compression, motion compensation, entropy coding etc., but using more complex techniques to preserve video quality. I wouldn't say it's a simple as "Moore's law in action".