Quote:
Originally Posted by Boulder
On HDR sources, mode 2 seems to produce noticably smaller files for the same CRF than mode 1.
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With the footage I'm currently encoding (yes, its HDR) it's the other way arround.
AQ-Mode 1 turned out a lot smaller than AQ-Mode 2.
So it is highly dependant on the type of footage (grain, motion, contrast,...).
So, as Ben says, its always recommended to use 2-pass when comparing.
Or even 3-pass because there still is quite a difference between the resulting bitrates when using 2-pass.
Maybe 3-pass is more accurate? (don't have the time to test it, sadly)
So far, my (quick) tests on current project AQ-Mode 2 turned out as the 'winner'.
Its HQ footage with slight (but noticeable) noise. AQ-Mode 2 preserved details better in the chroma channels and resulted in quite a bit less distortion.
Keep in mind though this probably varies from type of footage... When having footage which has a lot of grain, then distortion might be a more acceptable type of artifact and result in a perceptually better image. (ill test that probably another time)