Possible AQ bug

[Chabb]

Is it a bug or a feature that in builds since 861
AQ is out, which is noticeable when comparing filesizes and in files too:

x264 - core 59 r861 7331ea4 ... pb_ratio=1.30 aq=2:2.00
x264 - core 60 r881 e098505 ... pb_ratio=1.30 aq=0

Changing aq-mode and aq-strength gives no effect.

:confused:

[Dark Shikari]

Stop using CQP mode (http://git.videolan.org/?p=x264.git;a=commit;h=c4c85baeb5f374e9e1ca9b32954d5a4974cef043).

Constant Quantizer does indeed mean constant, so AQ is auto-disabled when using it.

[Chabb]

Sorry, my bad.
So what are you propose me to use: CRF or 2-pass

By the way, is there fractional CRF values available again?

[LoRd_MuldeR]

So what are you propose me to use: CRF or 2-pass

Depends on what you want to achieve!

If you want to get a certain level of quality, find out which CRF value satisfies your eyes and use that value for all encodes.
And if you want to get the maximum quality for a given filesize (or average bitrate), then use the 2-Pass mode.

By the way, is there fractional CRF values available again?

Yes, I think so.

[foxyshadis]

If you use CQ already, you can probably switch to a CRF of the same value and notice no obvious quality difference, though filesize will go down (with no AQ, with AQ anything can happen).