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added x264 dark bias strength

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Aicha 2023-11-20 12:02:04 +00:00
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@ -190,6 +190,18 @@ To use e.g. AQ mode 3 with strength 0.80:
--aq-mode 3 --aq-strength 0.80
```
### Dark bias strength
Some mods now include a parameter to control AQ mode 3's bias to dark scenes strength.
With this, the dark bias strength is a multiple of the AQ strength, meaning higher bias strength raises the dark bias and lower bias strength trends towards AQ mode 2.
This can be very useful in cases where you want to give more or fewer bits to darks without affecting the AQ strength.
To apply an AQ dark bias strength of 1.00:
```
--aq-mode 3 --aq-bias-strength 1.00
```
## Motion estimation range
The motion estimation range (merange) determines how many pixels are used for motion estimation.