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phoboslab/qoi

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The “Quite OK Image Format” for fast, lossless image compression

17 mentions on Hacker News by 17 people: 3 stories, 14 comments · first 2021-11-24 · latest 2025-07-28

Mentions per year 17 mentions · busiest year 2021 (11)
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  1. I'd want to know how it compares to https://github.com/phoboslab/qoi One thing to note when designing a new video codec is to carpet bomb around the idea with research projects to stake claim to any possible feature enhancements. Anything…
    comment by sitkack · 2025-07-28 · in I designed my own fast game streaming video codec – PyroWave
  2. …These both exist because png is slow and/or complicated. [1] https://github.com/richgel999/fpng [2] https://github.com/phoboslab/qoi (discussed here: https://news.ycombinator.com/item?id=29661498 )
    comment by smcameron · 2023-12-10 · in CPNG, a backwards compatible fork of PNG
  3. …it, and then interacted with others in their communities is ... neither polite nor reasonable. e.g. https://github.com/phoboslab/qoi/issues/35
    comment by NovemberWhiskey · 2023-03-03 · in Ethically Sourced Lena Picture
  4. I was kinda sad QOI ( https://github.com/phoboslab/qoi ) wasn’t included in the comparisons.
    comment by travisgriggs · 2022-06-08 · in What’s the best lossless image format?
  5. …taking about: https://mobile.twitter.com/richgel999/status/146443578680850... Which links to here: https://github.com/phoboslab/qoi/issues/35 It got so bad even John Carmack told him he was out of line:…
    comment by moron4hire · 2022-05-01 · in At one company I worked at only one thing mattered: the yearly bonus
  6. I don't know about CUDA, however I've made an AVX2 based encoder a few months ago : https://github.com/phoboslab/qoi/pull/143 I intend to create an AVX2 based decoder but I had absolutely no time to work on side projects in the past three…
    comment by mkcg · 2022-04-02 · in QOI – The Quite OK Image Format
  7. It's because this link ( https://github.com/phoboslab/qoi ) has been approved by mods for reposting: it appears on the "pool" list [1] [2]. Which is a bit odd because as you point out, a different link [3] for the same project already…
    comment by versteegen · 2021-12-24 · in QOI – The “Quite OK Image Format” for fast, lossless image compression
  8. …with 2800 images en-/ and decodes without losing any pixels, as checked by qoibench[3]. [1] https://github.com/phoboslab/qoi/blob/master/qoifuzz.c [2] https://qoiformat.org/benchmark/ [3] https://github.com/phoboslab/qoi/blob/master/qoibenc…
    comment by phoboslab · 2021-12-20 · in The QOI File Format Specification
  9. …twice. Edit: Seems like I'm not the only person that thought this was a super weird choice: https://github.com/phoboslab/qoi/issues/36 The reasoning is: > The file format for QOI will not change anymore.
    comment by IshKebab · 2021-12-20 · in The QOI File Format Specification
  10. …buffer. So you don't get random memory contents in the output, which would be more exploitable. [1] https://github.com/phoboslab/qoi/blob/master/qoi.h
    comment by Animats · 2021-11-26 · in QOI: Lossless Image Compression in O(n) Time
  11. …the .h (header) file contains functions. Not function definitions, but actual functions. E.g.: https://github.com/phoboslab/qoi/blob/master/qoi.h All functions (qoi_encode, qoi_decode, etc.) are completely included in this header file. It…
    comment by hackerfactor1 · 2021-11-24 · in QOI: Lossless Image Compression in O(n) Time
  12. …separately compiled objects should be able to quickly achieve that from a single-file library [1] https://github.com/phoboslab/qoi/blob/324c2243b2fb35f741a88d...
    comment by hn_acc_2 · 2021-11-24 · in QOI: Lossless Image Compression in O(n) Time
  13. …could use direct lookup However, I don’t think that part gonna work. See the code using that table: https://github.com/phoboslab/qoi/blob/master/qoi.h#L324-L328 SIMD registers aren’t indexable (at least not on AMD64), the register needs to…
    comment by Const-me · 2021-11-24 · in QOI: Lossless Image Compression in O(n) Time
  14. It has data size in header: https://github.com/phoboslab/qoi/blob/master/qoi.h#L77-L82 Just put exif info after data :P
    comment by fabrixxm · 2021-11-24 · in QOI: Lossless Image Compression in O(n) Time