Quality settings don’t do anything

I changed default settings to “lossless” for both JPG and WebP. But WebP “bulk convert” option produces the same files (same checksum). It seems that the quality is being ignored?

Options:
------------
- encoding: "auto"
- quality: 100
- near-lossless: 100
- metadata: "none"
- log-call-arguments: true
- use-nice: true

Note that these are the resulting options after merging down the "jpeg" and "png" options and any converter-prefixed options

Defaults:
------------
The following options was not set, so using the following defaults:
- auto-limit: true
- alpha-quality: 85
- method: 6
- sharp-yuv: true
- auto-filter: false
- low-memory: false
- preset: "none"
- try-common-system-paths: true

Encoding is set to auto - converting to both lossless and lossy and selecting the smallest file

Converting to lossy
Version: ImageMagick 6.8.9-9 Q16 x86_64 2020-12-04 https://www.imagemagick.org
Extracted version number: 6.8.9-9
Running auto-limit
Quality setting: 100. 
Quality of jpeg: 68. 
Auto-limit result: 68 (limiting applied).
*Note: "sharp-yuv" option is not supported in your version of ImageMagick. ImageMagic >= 7.0.8-26 is required* 
Tested "nice" command - it works :)
Executing command: nice /usr/bin/convert -quality '68' -strip -define webp:alpha-quality=85 -define webp:method=6 '[doc-root]/wp-content/uploads/2023/05/dress.jpg' 'webp:[doc-root]/wp-content/webp-express/webp-images/uploads/2023/05/dress.jpg.webp.lossy.webp' 2>&1
success
Reduction: 54% (went from 160 kb to 74 kb)
Converting to lossless
Version: ImageMagick 6.8.9-9 Q16 x86_64 2020-12-04 https://www.imagemagick.org
Extracted version number: 6.8.9-9
*Note: "sharp-yuv" option is not supported in your version of ImageMagick. ImageMagic >= 7.0.8-26 is required* 
Tested "nice" command - it works :)
Executing command: nice /usr/bin/convert -quality '68' -define webp:lossless=true -strip -define webp:alpha-quality=85 -define webp:method=6 '[doc-root]/wp-content/uploads/2023/05/dress.jpg' 'webp:[doc-root]/wp-content/webp-express/webp-images/uploads/2023/05/dress.jpg.webp.lossless.webp' 2>&1
success
Reduction: 54% (went from 160 kb to 74 kb)

Why quality is 68 if I set it to 100 in the settings?

• This topic was modified 1 year, 4 months ago by rinart73.