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Old 24th January 2018, 23:05   #401  |  Link
mzso
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Originally Posted by hajj_3 View Post
isn't heif patented though? I can't see mozilla adopting a patented format nor many phone manufacturers. AV1 is 15% better than hevc at still images according to recent statements. Google's PIK is another contender.
I don't think Pik can exist if they go for an AOM image format. If they decide to diverge from AV1 compatibility it's improvements will probably be merged, otherwise it'll likely get abandoned.
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Old 25th January 2018, 20:09   #402  |  Link
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The only real viable replacement for GIF/PNG/JPEG I see now is HEIF, which is now the default picture format for iOS. The implementation today is HEVC, but extending it to AV1 appears reasonably straightforward.
Can I ask why do You think that HEIF is the only viable alternative?

Not sure about HEIF but HEVC has zero chances to replace jpeg.
Enough to say that Google and Mozilla simply won't implement it. It's a big no-go. There is no even a minor doubt of that.

JPEG XL or intra-AV1 have all chances. Or some sort of collaboration between these two.
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Old 25th January 2018, 21:39   #403  |  Link
mzso
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Can I ask why do You think that HEIF is the only viable alternative?

Not sure about HEIF but HEVC has zero chances to replace jpeg.
Enough to say that Google and Mozilla simply won't implement it. It's a big no-go. There is no even a minor doubt of that.

JPEG XL or intra-AV1 have all chances. Or some sort of collaboration between these two.
Well, HEIF is HEVC based, so I doubt there's any difference in the corporation's attitude toward it compared to HEVC.
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Old 26th January 2018, 13:35   #404  |  Link
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"To encourage widespread adoption, an important goal for this standard is to support a royalty free baseline."

Sounds like a non-starter with wishy-washy language like that. Pretty sure that's what was said about H.264 as well, but they had no real process in place to make it possible. HEVC even lacked a process to enable one-stop shopping for royalties. They all seem to be stuck in some trap of their own making.
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Old 26th January 2018, 15:15   #405  |  Link
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It's just a beginning.

"The JPEG Committee intends to publish a final Call for Proposals (CfP) following its 78th meeting (January 2018)"

There was already some collaboration(?) between Daala developers and JPEG
https://people.xiph.org/~jm/daala/revisiting/
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The improvement in quality compared to the previous status update is quite obvious. Daala is now much better than both WebP and JPEG (libjpeg-turbo is the most commonly used JPEG encoder). As for Daala vs BPG/HEVC, the artifacts are obviously different and hard to judge from just four images. Opinions are likely to vary based on the viewer and the input image. At this point, what we'd really need is a full subjective test. Fortunately, this is exactly what is going to take place shortly, as Daala has been submitted as a candidate for the Image Compression Grand Challenge at ICIP 2016. The results should be available in September. In the mean time, you can read the paper we will be presenting.
I guess that now Daala is part of AV1 project there will be some feedback between AV1 and JPEG-XL.
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Old 28th January 2018, 12:54   #406  |  Link
mzso
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new Libvpx released with improvements to VP9: https://www.phoronix.com/forums/foru...mizations-more
This is the AOM/AV1 thread. There's vp9 thread also.

That said, I hope there's some multi-process optimization. CPU utilization is abysmal when encoding VP9.

Last edited by mzso; 28th January 2018 at 12:58.
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Old 30th January 2018, 01:09   #407  |  Link
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http://blog.chiariglione.org/a-crisi...nd-a-solution/

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At long last everybody realises that the old MPEG business model is broke, all the investments (collectively hundreds of millions USD) made by the industry for the new video codec will go up in smoke and AOM’s royalty free model will spread to other business segments as well.
Even the MPEG founder sees the beginning of the end of MPEG's terrible proprietary codecs situation & business model.
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Old 30th January 2018, 12:16   #408  |  Link
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Originally Posted by GTPVHD View Post
http://blog.chiariglione.org/a-crisi...nd-a-solution/

Even the MPEG founder sees the beginning of the end of MPEG's terrible proprietary codecs situation & business model.
Thanks for the link.

HEVC is 60% more efficient than AVC? I wonder what he's smoking. In my experience it's more like from 0 to 30% (for very specific use cases like anime).
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Old 30th January 2018, 20:01   #409  |  Link
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In UHD resolutions it's more probable for HEVC to be ahead of AVC.
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Old 30th January 2018, 23:15   #410  |  Link
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I've only ever encoded one video with HEVC. A musical video with rather high motion. At the same bitrate HEVC did visibly much better than AVC. Also, took forever to encode.
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Old 31st January 2018, 03:03   #411  |  Link
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MSU's codec comparison is out: http://www.streamingmedia.com/Articl...ticleID=122945

It uses a version of libaom from July 2017.
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Old 31st January 2018, 20:31   #412  |  Link
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btw. is there any news regarding when to expect a bit stream freeze? Last I read was January 2018, which now is gone,..
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Old 31st January 2018, 20:39   #413  |  Link
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btw. is there any news regarding when to expect a bit stream freeze? Last I read was January 2018, which now is gone,..
It's not midnight yet everywhere. :P
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Old 1st February 2018, 07:25   #414  |  Link
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btw. is there any news regarding when to expect a bit stream freeze? Last I read was January 2018, which now is gone,..
FOSDEM is this weekend so I guess that's when we get some news.
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Old 3rd February 2018, 14:44   #415  |  Link
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3000x slower.

Also we need to stop focusing on PSNR and SSIM. These two should be used to add prospective.

Last time i heard Netflix were going to update VMAF. What happen to that?
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Old 3rd February 2018, 15:20   #416  |  Link
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3000x slower.
Duh, like reference H.265 encoder (HM) was any faster.
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Old 3rd February 2018, 20:04   #417  |  Link
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Duh, like reference H.265 encoder (HM) was any faster.
It was, if I remember correctly only 50 - 100 times slower. Order of Magnitude less then AV1.
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Old 5th February 2018, 08:33   #418  |  Link
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So, not ready yet:
https://youtu.be/6UksCRCl_bI
"Almost"
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Old 5th February 2018, 12:24   #419  |  Link
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Looks like they are cleaning up all the little niggles in the bitstream which is good A couple additional weeks for a potentially long lasting codec is fine.
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Old 6th February 2018, 13:59   #420  |  Link
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Looks like they are cleaning up all the little niggles in the bitstream which is good A couple additional weeks for a potentially long lasting codec is fine.
How about months? At least Mozilla and Xiph are doing those works and many other member. If it was Google i dont know what mess it will end up with.
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