av1-avif
sumatrapdf
av1-avif | sumatrapdf | |
---|---|---|
25 | 44 | |
437 | 12,610 | |
0.0% | 1.2% | |
0.0 | 9.7 | |
over 1 year ago | 1 day ago | |
HTML | C | |
BSD 2-clause "Simplified" License | GNU General Public License v3.0 only |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
av1-avif
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FSF Slams Google over Dropping JPEG-XL in Chrome
The article is about avif not webp. Note the editors for the AOM avif specification don't even include Google https://aomediacodec.github.io/av1-avif/
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Whistleblowers Take Note: Don’t Trust Cropping Tools
This reminds me of something similar from the guy who implemented AVIF in Firefox. He gives a talk about the implementation [1] where he talks about the CLAP privacy problem. Basically the spec adds a field that allows for cropping of the image, but the binary file would still contain the original. This would lead users to believe some image data was deleted when it really wasn't. I always thought he spent a lot of time and effort on this for little gain, but now I'm starting to think it was worth his effort.
[1]: https://youtu.be/BUkRlfkv2D8?t=2199
And the related GitHub issue: https://github.com/AOMediaCodec/av1-avif/issues/188
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AVIF images encoded with yuv422 appear black on iOS 16 / MacOS Ventura
So actually the same images I linked above are in the AOMediaCodec repo as well, under Link-U: https://github.com/AOMediaCodec/av1-avif/tree/master/testFiles/Link-U And I see the same issue with the yuv422 images there as well. I'm guessing Apple's AVIF implementation must be incomplete?
- JPEG-XL Sample HDR Photos
- Questions about AVIF metadata for PQ HDR mastering & tonemapping
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What is AVIF?
Created by Alliance for Open Media and worked on by Netflix, Microsoft, and Google developers, AVIF is open source - you can even weigh in on image processing and spec issues.
- We need to rethink AVIF lossless mode.
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How can HDR AVIF stills be created?
I've been trying to find a way edit 14bit RAW files (.ARW) to an HDR capable format (HEIF/AVIF). In the process I found out there's an official AVIF encoder (1) by AOM that seems like it should be capable of creating HDR PQ stills.
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HDR AVIF samples (HDR10 for still images)
Others samples are available here : https://github.com/AOMediaCodec/av1-avif/tree/master/testFiles/Netflix/avif
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Question: Multiscale AVIF performance?
AVIF can do something that resembles hierarchical JPEG and that could be useful for progressive decoding: you can have multiple layers/scales, where e.g. first a 1:4 image is encoded, then residuals to get to 1:2, then residuals to get to 1:1. Examples of this were recently added to the AVIF spec: https://github.com/AOMediaCodec/av1-avif/pull/134
sumatrapdf
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MuPDF WASM Viewer Demo
I’m curious, have you tried SumatraPDF (uses muPDF under the hood)?
https://github.com/sumatrapdfreader/sumatrapdf
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SumatraPDF Reader
Do you mind reporting those issues either to SumatraPDF at https://github.com/sumatrapdfreader/sumatrapdf/issues or directly to MuPDF at https://bugs.ghostscript.com/ if it also has the same issue? Thank you!
There are many wonderfully weird PDFs and epubs out there, but we do our best to fix issues. :)
- JPEG XL in EPUBs and PDFs?
- EPUB 3.3 becomes a W3C recommendation
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FSF Slams Google over Dropping JPEG-XL in Chrome
FWIW, https://github.com/sumatrapdfreader/sumatrapdf/issues/1249 ("Support form filling for at least 1040 irs form") has a comment saying "MuPDF-GL has the capability to edit fields and save the PDF" of a 1040.
I have just learned the Firefox 93 added support XFA - https://techdows.com/2021/10/open-xfa-pdfs-in-firefox.html .
So it would appear there are free software solutions to XFA forms.
Just because something doesn't seem far-fetched to you, doesn't mean most people will regard it as far-fetched.
Many people all sorts of "sectarian objections" - far more than there are SovCits or other tax protesters. Stallman has never come across as a tax protester. Ergo, I think it's far-fetched that "sectarian objections" is strongly associated with tax protests.
Further, at https://stallman.org/archives/2017-may-aug.html we can read Stallman opinine that we need to "return to the "bad old days", when Americans in general could have a decent life, not penury; when the US could afford to build what the public needed instead of privatizing everything with a toll" by making taxation more progressive. At https://stallman.org/archives/2011-jan-apr.html we read he supports "The Fairness in Taxation Act [which] would raise taxes to 45% on incomes over a million dollars a year."
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firefox users stay winning
link for the lazy
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a good pdf reader
If you are going to run something in wine, try sumatrapdf. It's FOSS but Windows only. (sadly, but runs great on wine)
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YSK that Adobe Reader can remember the last page where you left off
Sumatra is Adobe free, free, and can remember the page you were on.
- What's a good, free PDF viewer?
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Firefox 106.0, See All New Features, Updates and Fixes
Sumatra PDF has always been my choice: minimal, lightweight, no bloat... just perfect!
What are some alternatives?
ImageMagick - 🧙♂️ ImageMagick 7
sioyek - Sioyek is a PDF viewer with a focus on textbooks and research papers
libavif - libavif - Library for encoding and decoding .avif files
pdfsam - PDFsam, a desktop application to split, merge, mix, rotate PDF files and extract pages
chromium - The official GitHub mirror of the Chromium source
fbpdf - A small framebuffer pdf, djvu, epub, xps, and cbz viewer
brunsli - Practical JPEG Repacker
markdown - markdown parser and HTML renderer for Go
webp - webp for the Windows build of ImageMagick
PDF-Writer - High performance library for creating, modiyfing and parsing PDF files in C++
squoosh - Make images smaller using best-in-class codecs, right in the browser.
pdftk