10 hours for 21.8 GiB.

[benwaggoner]

Originally Posted by froggy1

What's the point then of having a CPU with enough/many threads and then not being able to utilize it fully during encoding for the sake of quality improvement that is so minor you won't notice it unless you use a magnifying glass to look at still pictures?

-F 1 --pmode will saturate 12+ cores at 1080p. The quality benefit from turning off frame threading is a lot less than it was a few years ago, however.