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https://issues.apache.org/jira/browse/GUACAMOLE-652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16674562#comment-16674562
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george commented on GUACAMOLE-652:
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I meant force the color mode. I situation when client behind slow connection
(like gsm network with high latency), situation when latency and cpu load on
server side is no issue now, I have slow 500-900ms TTL and losses packets so
the first question is the fastest delivery through network.
Have ability to send to protocol:
5.color.4.gray ( or 4 / 16 / 256 ... colors )
or
5.image.4.webp
5.image.4.webp.2.70 ( quality )
I attached real sample, I emulate slow 3g in chrome, frame rate isn't high,
guacd send png...
sample blob from guacd png = 23kb
same image in grayscale + png = 12kb
same image in webp + 70 quality factor = 6kb
In this case, I want to sacrifice with quality, server cpu load, but minimize
network usage
p.s. Jira have a broken the attach files function :( Files here
[https://gofile.io/?c=QJgji1]
> Grayscale mode for image data and dynamic control of image quality
> ------------------------------------------------------------------
>
> Key: GUACAMOLE-652
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-652
> Project: Guacamole
> Issue Type: Improvement
> Components: guacamole
> Reporter: george
> Priority: Major
>
> Grayscale mode for image is the Magic Wand, when client is behind the poor
> internet bandwidth.
> The grayscale images up to 2-3 times smaller, but make no discomfort when
> work with 90% of tasks, except graphics.
> Switch the guacd <> client color and quality mode dynamic at protocol level
> will be the super improvement, so client able to analyze bandwidth switch the
> best performance mode.
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