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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://disobey.net/users/gianni/statuses/114944133944871117">Gianni Rosato (gianni@disobey.net)'s status on Thursday, 31-Jul-2025 05:45:20 JST</a><a href="https://disobey.net/@gianni" title="gianni@disobey.net"><img src="https://gnusocial.jp/avatar/111984-48-20230411021402.webp" width="48" height="48" alt="Gianni Rosato" style="position: absolute; left: 0; top: 0;">Gianni Rosato</a></section><article><p>Exciting <a href="https://disobey.net/tags/avif" rel="tag">#avif</a> news – libaom’s tune iq (derived from SVT-AV1-PSY’s Tune 4) is used across The Guardian’s website now. They say they serve mostly AVIF, with JPEG XL shipped when supported. Very exciting stuff!</p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/5430156#notice-10655859">In conversation</a><time datetime="2025-07-31T05:45:20+09:00" title="Thursday, 31-Jul-2025 05:45:20 JST">about a year ago</time> <span>from <span><a href="https://disobey.net/@gianni/114944133944871117" rel="external" title="Sent from disobey.net via ActivityPub">disobey.net</a></span></span><a href="https://disobey.net/@gianni/114944133944871117">permalink</a><h4>Attachments</h4><ol><li><label><a rel="external" href="https://gnusocial.jp/attachment/5011239">“[sorry for the spam] Just wanted to say that theguardian.com is on `tune=iq` for the last two weeks (we serve AVIF to non-JXL-supporting browsers) and we couldn’t be more happy. Encoder consistency is much, much higher (still not as good as JXL, but that’s just an impression, not a rigorous assessment): some highly compressible images where delicate detail was being obliterated grown even ~3× in filesize and look much better while unnecessarily weighty images shrank, mostly without any perceptible degradation. Interestingly, we kept the same quality values (which differ by dpr) and as much as we can say, the overall bandwidth stayed more or less the same (I can’t see any change in the graph), so it’s likely the massive reduction of rare weighty images offset small images growing.Huge thanks to juliobbv for his work on `tune=iq` and to whomever else worked on it. And to friends at our image CDN (Fastly). And to everyone here as without this server, I wouldn’t even know about it…
As always, we welcome improvements to any and all encoders. So the idea of “splitting Julio” couldn’t sound more exciting 😉.”</a></label><br><a href="https://disobey.net/system/media_attachments/files/114/944/127/056/786/439/original/b41803a358615c82.jpeg" rel="external">https://disobey.net/system/media_attachments/files/114/944/127/056/786/439/original/b41803a358615c82.jpeg</a></li></ol></footer></blockquote>

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Gianni Rosato (gianni@disobey.net)'s status on Thursday, 31-Jul-2025 05:45:20 JST Gianni Rosato
Exciting #avif news – libaom’s tune iq (derived from SVT-AV1-PSY’s Tune 4) is used across The Guardian’s website now. They say they serve mostly AVIF, with JPEG XL shipped when supported. Very exciting stuff!
In conversationabout a year ago from disobey.netpermalink
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1. “[sorry for the spam] Just wanted to say that theguardian.com is on `tune=iq` for the last two weeks (we serve AVIF to non-JXL-supporting browsers) and we couldn’t be more happy. Encoder consistency is much, much higher (still not as good as JXL, but that’s just an impression, not a rigorous assessment): some highly compressible images where delicate detail was being obliterated grown even ~3× in filesize and look much better while unnecessarily weighty images shrank, mostly without any perceptible degradation. Interestingly, we kept the same quality values (which differ by dpr) and as much as we can say, the overall bandwidth stayed more or less the same (I can’t see any change in the graph), so it’s likely the massive reduction of rare weighty images offset small images growing. Huge thanks to juliobbv for his work on `tune=iq` and to whomever else worked on it. And to friends at our image CDN (Fastly). And to everyone here as without this server, I wouldn’t even know about it… As always, we welcome improvements to any and all encoders. So the idea of “splitting Julio” couldn’t sound more exciting 😉.”
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