in some brief tests on my M1 Pro 10 Core CPU 14 Core GPU, I have noticed that the hardware is not even being utilized fully (about 10% CPU and GPU) but still get approx the same speed to finish the encode. The quality is not horrible but have also noticed some artifacts as well. Trying to understand and grasp the differences. In my tests though it uses very little battery while same encode with software uses about 25% per hour of video.