Marginal improvements in apparent resolution aren't the only thing that a more efficient codecs can deliver. The same capacity can also be used to increase the

Marginal improvements in apparent resolution aren't the only thing that a more efficient codecs can deliver. The same capacity can also be used to increase the bitrate of the encoded files dramatically, and / or deliver streams at much higher frame rates. In terms of improving picture quality, jacking up these aspects while keeping resolution at less than the supported maximum can be far more effective places to spend your bit budget.