Hi,

Has the use of a lossless version of WebP encoding been investigated
instead of PNG?

According to the below benchmark (not sure how up-to-date), with a fairly
low compression setting (q=0, m=1) webp still needs on average less bytes /
pixel than PNG reference (Table 1), whilst being x2 faster for encoding
(Table 2):

https://developers.google.com/speed/webp/docs/webp_lossless_alpha_study

In general Guacamole performance is quite good, but when starting to scroll
it can lag substantially more than a direct RDP connection (even if the RDP
server is on the same host as guacamole server) - before the lossy WebP
kicks in. I would be curious if trying to use WebP consistently (also for
lossless, not just for high-framerate lossy setup) might improve somewhat
the responsiveness.

Has anyone investigated this, or does this sound like a bad idea?

Many thanks,

AndrĂ¡s

ps: apologies if this message appears twice, I sent one originally before
subscribing to the list and I am unsure if that went through.

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