libavif VS ImageOptim

It's 2023, surely this is not yet another bug related to memory unsafety that could be avoided if we'd stop writing critical code that deals with extremely complex untrusted input (media codecs) in memory unsafe languages?

Yep, of course it is: https://github.com/webmproject/libwebp/commit/902bc919033134...

I guess libwebp could be excused as it was started when there were no alternatives, but even for new projects today we're still committing the same mistake[1][2][3].

[1] -- https://code.videolan.org/videolan/dav1d

[2] -- https://github.com/AOMediaCodec/libavif

[3] -- https://github.com/AOMediaCodec/libiamf

Yep. Keep writing these in C; surely nothing will go wrong.

As far as I understand you are talking about this plugin. I don't know c++ and half of the code was like a black magic, but if I get it correctly, it encodes your images with libavif, and adds custom metadata ([solar/time of day] -> json -> base64).

So a few dozen comments, but so far it doesn't look like any mention the immediate thing that jumped out at me which was the claims vs AVIF:

>"In turn, what users will be given is yet another facet of the web that Google itself controls: the AVIF format."

Huh? I'll admit I haven't been following codecs as super ultra closely as I used to, but I thought AOM was a pretty broad coalition of varying interests and AV1 an open, royalty free codec that was plenty open source friendly? I've heard plenty of reasonable arguments that JPEG XL has some real technical advantages over AVIF and as well as superior performance is much more feature rich and scalable. So I could see people being bummed for that. But this is the first time I've heard the assertion that it's somehow a Google project? I mean, AOM's libavif reference is BSD too [0]? I'd love some more details on that from anyone who has been following this more closely. I can even understand if AOM isn't as community friendly and an accusation that it's dominated by big corps, but in that case why single out Google alone? From wiki:

>The governing members of the Alliance for Open Media are Amazon, Apple, ARM, Cisco, Facebook, Google, Huawei, Intel, Microsoft, Mozilla, Netflix, Nvidia, Samsung Electronics and Tencent.

Like, Google is certainly significant, but that's a lot of equally heavy hitters. And interesting that Mozilla is there too.

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0: https://github.com/AOMediaCodec/libavif

> You have a good point that AVIF layered image items can act like such P/B-frames. Do libavif (or other AVIF implementations if any) make use of them?

Seemingly. As search for "libavif progressive encoding" shows several issues about this, and a search for "progressive" in https://github.com/AOMediaCodec/libavif/blob/main/include/av... shows an enum for avifProgressiveState, appears to show support for it.

I mean, it already has it: https://github.com/AOMediaCodec/libavif/commit/570c42c2c10a878c8cc896f1c5daf1a955274142

Apart from mpv and ffplay, the only software I currently have installed that can play animated AVIF is Chromium. And from what I've read from this libavif bug report, I'm not sure if looping animated files in general is something that's just done by default by a lot of software regardless of whether the file is marked as a loop or not.

The support for progressive AVIF decoding has landed in libavif and in Chromium. But are there any docs on how to create and test progressive AVIF images?

The "for example" is the key here, because AVIF does support multi-layer coding per the spec now (though not currently implemented in libavif from what I can tell).

libavif is at version 0.11.1, see https://github.com/AOMediaCodec/libavif/tags

Compressing images: This technique reduces image size without compromising quality. You can achieve this using various image compression tools like TinyPNG or ImageOptim. These tools are specifically designed to manage multiple image formats and compression methods. They help reduce image files, resulting in less data transfer from the server to the user's device. It is advisable to compress images before uploading them to the web server.

ImageOptim: ImageOptim is a free and open-source tool that can be used to compress JPEG, PNG, and GIF images.

Currently installed apps: Alfred for searching applications/files and launching websites quickly i Stat menus to monitor my hardware Geo Gebra Classic 6 for school Rectangle for better window management Obsidian for note taking Resolve for video editing and all utilities that come with it Bitwarden as my go-to password manager Microsoft Word, Excel PowerPoint and Teams for school Dropover for moving or sending more files quickly Gestimer for work sessions iTerm as a better terminal than the built-in one Python and all things that come with the install Parallels Desktop and all stuff that comes with the install for running windows only applications Visual Studio Code for coding Blender for 3D Image Optim CurseForge for modded Minecraft Minecraft Find any file Mac Updater 3; would love to have the pro version

ImageOptim - file resizing and optimising images, even on the command line (free)

ImageOptim - Price: Free Image optimizer for Mac that allows you to reduce the file size of your images without losing quality, and strip the metadata.

If you're on a Mac, use ImageOptim to optimize your images: https://imageoptim.com/mac If you're on Windows, I imagine there's a similar app

Bonus points: before you re-import them drop the exports folder into imageoptimfor the most efficient lossless compression imaginable.

ImageOptim — shrink those file sizes!