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Any news from Daala?

by oDot 10y ago

dkbrk 10y ago
There was a blog post a few months ago: [0] It looks like there have been a few dead ends -- clever ideas that for one reason or another didn't pan out -- but overall, it's making solid progress. It remains, however, very experimental and is far from complete. One area in which Daala works very well right now is in compression of still images. There's a demo at the bottom of the page which shows it as much better than HEVC for that purpose, and you can also see how the codec has improved over time. Of course, the relative goodness of codecs isn't necessarily consistent over widely varying bitrates. In some of the earlier posts the Daala researchers expressed the belief that the quantitative metrics often don't accurately correspond to subjective perception of quality. Netflix seems to be putting a lot of work into developing better metrics [1], but the Daala researchers seem to rely on subjective A-B tests as the 'gold standard'. [0]: https://people.xiph.org/~jm/daala/revisiting/ https://people.xiph.org/~jm/daala/revisiting/ [1]: http://techblog.netflix.com/2016/06/toward-practical-perceptual-video.html http://techblog.netflix.com/2016/06/toward-practical-percept...
clouddrover 10y ago
I think they're treating Daala as a research platform these days. AV1 is the future for video on the web and code from Daala has been contributed to it. AV1 is based on ideas from VP10 and Daala: 1. https://en.wikipedia.org/wiki/AOMedia_Video_1 https://en.wikipedia.org/wiki/AOMedia_Video_1 2. https://datatracker.ietf.org/wg/netvc/charter/ https://datatracker.ietf.org/wg/netvc/charter/ 3. http://aomedia.org/ http://aomedia.org/ 4. https://aomedia.googlesource.com/ https://aomedia.googlesource.com/
keeperofdakeys 10y ago
From what I understood, Daala was never meant to be a competitor to x265, but a research project that could create a competitor for the next generation, while using no techniques that could questionably come under current patents.

Any news from Daala?

by oDot 10y ago

Any news from Daala?

dkbrk 10y ago

There was a blog post a few months ago: [0] It looks like there have been a few dead ends -- clever ideas that for one reason or another didn't pan out -- but overall, it's making solid progress. It remains, however, very experimental and is far from complete. One area in which Daala works very well right now is in compression of still images. There's a demo at the bottom of the page which shows it as much better than HEVC for that purpose, and you can also see how the codec has improved over time. Of course, the relative goodness of codecs isn't necessarily consistent over widely varying bitrates. In some of the earlier posts the Daala researchers expressed the belief that the quantitative metrics often don't accurately correspond to subjective perception of quality. Netflix seems to be putting a lot of work into developing better metrics [1], but the Daala researchers seem to rely on subjective A-B tests as the 'gold standard'. [0]: https://people.xiph.org/~jm/daala/revisiting/ https://people.xiph.org/~jm/daala/revisiting/ [1]: http://techblog.netflix.com/2016/06/toward-practical-perceptual-video.html http://techblog.netflix.com/2016/06/toward-practical-percept...

clouddrover 10y ago

I think they're treating Daala as a research platform these days. AV1 is the future for video on the web and code from Daala has been contributed to it. AV1 is based on ideas from VP10 and Daala: 1. https://en.wikipedia.org/wiki/AOMedia_Video_1 https://en.wikipedia.org/wiki/AOMedia_Video_1 2. https://datatracker.ietf.org/wg/netvc/charter/ https://datatracker.ietf.org/wg/netvc/charter/ 3. http://aomedia.org/ http://aomedia.org/ 4. https://aomedia.googlesource.com/ https://aomedia.googlesource.com/

keeperofdakeys 10y ago

From what I understood, Daala was never meant to be a competitor to x265, but a research project that could create a competitor for the next generation, while using no techniques that could questionably come under current patents.