google/pik

project README contains no clear purpose, intent, or target goals

Osndok opened this issue · 6 comments

Osndok commented

e.g.

  • "aim to improve speed of [encode|decode]"
  • "to see if we can improve the quality [per byte of]"
  • "thought it would be fun to..."
  • etc.
jyrkialakuijala commented

Thanks for asking! We will give an attempt to fix this soon.

Noctem commented

The readme also mentions "Brunsli (lossless JPEG repacker)", but I've searched and been unable to find that anywhere. Is it publicly available?

jyrkialakuijala commented

Brunsli is a not-yet-opensourced project, similar to Dropbox's Lepton but just another point on the density/speed curve: 2.5x as fast but 2 % worse in compression. I'd rather put effort in polishing Pik than launching Brunsli at this stage. Consider using Lepton for now?

Noctem commented

@jyrkialakuijala It might be worth mentioning that in the readme until it's released to avoid confusion.

And does Brunsli create valid JPEGs or its own file format like Lepton? I'm currently using mozjpeg so that I can use the images without any intermediate steps.

jyrkialakuijala commented

Brunsli is its own incompatible format. Our project that creates valid jpegs is called Guetzli, located at https://github.com/google/guetzli

Noctem commented

Okay, thanks for the info. Unfortunately I'm usually looking to losslessly compress JPEGs, and my understanding is that guetzli is lossy only. Sounds like mozjpeg is likely still the best for my needs.

Sorry for derailing the subject of this issue.