Gianni R
@giannirosato.com
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! Thanks @juliobbv.bsky.social!
![“[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 😉.”](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:lj7y6n7ouwe2276ubo5cizaa/bafkreiabxrmpl67iegnifzu64fdckai6yjodzjneksoknqebyndshcjila@jpeg)
July 30, 2025 at 8:46 PM
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! Thanks @juliobbv.bsky.social!
Introducing Iris-WebP, a better WebP encoder: halide.cx/iris/index.h...
Iris offers up to >20% better compression than libwebp, and trades blows with libaom for AVIF.
My goal is to build an image-first encoder ecosystem for the modern Web, so that new web image codecs aren't generally superfluous.
Iris offers up to >20% better compression than libwebp, and trades blows with libaom for AVIF.
My goal is to build an image-first encoder ecosystem for the modern Web, so that new web image codecs aren't generally superfluous.
July 9, 2025 at 5:44 PM
Introducing Iris-WebP, a better WebP encoder: halide.cx/iris/index.h...
Iris offers up to >20% better compression than libwebp, and trades blows with libaom for AVIF.
My goal is to build an image-first encoder ecosystem for the modern Web, so that new web image codecs aren't generally superfluous.
Iris offers up to >20% better compression than libwebp, and trades blows with libaom for AVIF.
My goal is to build an image-first encoder ecosystem for the modern Web, so that new web image codecs aren't generally superfluous.
Updated numbers for Eve-AV1 & Eve-VP9 are public! The last time they were updated was around 2019, so this should give a more relevant look at how they perform.
It takes a lot to improve a mature video encoder, and I'm very impressed with the Eve lineup. Shout-out @luctrudeau.bsky.social!
#av1
It takes a lot to improve a mature video encoder, and I'm very impressed with the Eve lineup. Shout-out @luctrudeau.bsky.social!
#av1
April 7, 2025 at 11:06 PM
Updated numbers for Eve-AV1 & Eve-VP9 are public! The last time they were updated was around 2019, so this should give a more relevant look at how they perform.
It takes a lot to improve a mature video encoder, and I'm very impressed with the Eve lineup. Shout-out @luctrudeau.bsky.social!
#av1
It takes a lot to improve a mature video encoder, and I'm very impressed with the Eve lineup. Shout-out @luctrudeau.bsky.social!
#av1
![STOP DOING CODECS
• VIDEOS WERE NOT SUPPOSED TO BE GIVEN
LETTERS AND NUMBERS
• YEARS OF ENCODING yet NO REAL-WORLD USE FOUND for ANYTHING MORE THAN H264
• Wanted to record videos in higher quality? We had a tool for that: It was called A REEL OF FILM
• "Yes please give me 10 bit 4:2:2 chroma. Please give me Rec. 2020 color" - Statements dreamed up by evil wizards
LOOK at what encoding nerds have been demanding your Respect for all this time, with all the h264 compatible media players we built for them
(This is REAL encoding
Y'
Cb+Cr
Y'CbCr
science
done by REAL encoders ):
Duration: 00:00:05.13, start: 0.000000, bitrate: 389334 kb/s
Strean #0:0[0x1] (eng): Video: prores (4444) (apth / 0x68347961), yuva144p12le
+
4:4:4
- N5000* RG8
/s, SAR 1:1 DAR 256:135, 30 fps, 30 tbr, 30 tbn (default)
creation_time
: 2024-10-27123:05:84.000000Z
+
4:2:2
-ClOaK
handler_nane
: Apple Video Media Handler
encoder
: appl
: Apple ProRes 4444
+
4:2:0
Strean #0:1[0x2](eng): Data: none (tacd / 0x64636074), ® kb/s (default)
Metadata: creation time
: 2024-10-27723:05:04.000090z
handler_nane
: Tine Code Media Handler
4:1:1
:00:00:00:00
insupported codec with id 0 for input strean 1
?????
???????
?????????????????
"Hello I would likeDNxHR apples please"
They have played us for absolute fools](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:lj7y6n7ouwe2276ubo5cizaa/bafkreiablwzerkb2vxj6zkjjzjqfxqinabob5qut7ydvhqc5uftb4nkl3i@jpeg)
![The real reason the US government doesn't want you to use C. And you thought it was because of "memory-safety"? [shows various languages and their corporate ‘stakeholders’ alongside ‘uncontrollable’ C]](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:lj7y6n7ouwe2276ubo5cizaa/bafkreihjzu4oao5iyqw4xzdk7vkco5bvh3fnlrchcl3kln45btt5iac3ma@jpeg)