[x264-devel] How can I disable Adaptive Quantization (AQ) completely?

[Raul Lopez]

Using x264 0.148.x built today, I was not able to completely disable AQ
when I set "--aq-mode 0".

I get a reduction in the range of QP in the Initial Intra Frame from 20-41
(without the --aq-mode 0 option) to 27-36, so the parameter is doing
something, but, for testing purposes, I would want to have a single QP for
the whole frame that adapts to the content and is regulated by Rate Control.

Does --aq-mode 0 not work or do I need to set any other parameter at the
same time?

This is my command line:

x264 --preset fast --bframes 0 --bitrate 3000 --vbv-bufsize 3000
--vbv-maxrate 3000 --nal-hrd cbr --fps 30 --keyint 100 --min-keyint 100
--no-scenecut --aq-mode 0 --output
sensor_3Mbps_CBR_VBV1Sec_IP_GOP100_noAdaptiveQP.h264 sensor_1920x1080p30.mov

Any guidance would be appreciated.

Raul
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