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Bug 780230 - guetzli perceptual JPEG encoder export option
guetzli perceptual JPEG encoder export option
Status: RESOLVED OBSOLETE
Product: GIMP
Classification: Other
Component: Plugins
unspecified
Other All
: Low enhancement
: Future
Assigned To: GIMP Bugs
GIMP Bugs
https://github.com/google/guetzli/
Depends on:
Blocks:
 
 
Reported: 2017-03-18 01:11 UTC by Jean-François Fortin Tam
Modified: 2018-05-24 17:36 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description Jean-François Fortin Tam 2017-03-18 01:11:29 UTC 
This allows JPEG compression with 20-30% smaller filesize without breaking the standard: https://github.com/google/guetzli/

Would be really cool to have that in GIMP!

See also: https://arstechnica.co.uk/information-technology/2017/03/google-jpeg-guetzli-encoder-file-size/
Comment 1 Pat David 2017-03-18 02:11:15 UTC 
While neat, I'm not so sure folks will have the patience to wait for the encoding (it's really slow - as in 15-20 minutes for a 16mp image).
Comment 2 Jean-François Fortin Tam 2017-03-19 00:09:41 UTC 
Oh wow, _that_ long even with a modern CPU? I hadn't realized it was so computationally expensive, I thought it was just memory-hungry. I unfortunately was not able to build the app to try for myself.

From a little bit of googling on comment threads on news sites, it seems that it has no multithreading yet (uses only one CPU core) and it does not have any SSE/AVX-related code. So that's probably plenty of room for improvement already. I'm hopeful that, like early versions of VP8 and VP9, this will eventually get optimized, at which point it might be a viable alternative encoding option for GIMP...
Comment 3 Jehan 2017-03-20 00:06:29 UTC 
Well I guess if someone wants to propose a patch, we could always include it as an alternate "slow" (yet smaller file) option in the jpeg export dialog. But considering the slow encoding speed, it cannot be the default for the time being.

I'll set a milestone as "Future" for now so that we at least keep an eye on the evolution of this encoder.
Comment 4 GNOME Infrastructure Team 2018-05-24 17:36:12 UTC 
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