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Old 19th September 2017, 17:56   #301  |  Link
stax76
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Unplayable, fine I changed it, can't get much more foolproof!
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Old 21st September 2017, 20:46   #302  |  Link
wiak
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Originally Posted by easyfab View Post
For this people warning in not necessary, the current encoding speed is enough .

AV2 or AV3 will be out until they finish encoding there first movie.

It take me 5 min to encode foreman clip (300 frames 352*288).
tell me i tried encoding 500fps 4k frames ;P took a few days
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Old 26th September 2017, 17:09   #303  |  Link
easyfab
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From Timothy B. Terriberry's VDD17 presentation :

see : https://bambuser.com/v/6908002#t=2416s

Planning soft bitstream freeze by Oct. 31st


● Definition of “soft” is soft
– Some think it means “only critical bugfixes”
– Some think it means “we can tweak anything”
– Reality likely a pragmatic mix
● IPR analysis is not complete

From Netflix VDD17 prsentation :

Teaser : codec comparaison :

see : https://bambuser.com/v/6909221#t=2465s
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Old 26th September 2017, 17:49   #304  |  Link
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From Timothy B. Terriberry's VDD17 presentation :
see : https://bambuser.com/v/6908002#t=2416s
Very interesting... but please use the latest build (v2.5) of x265 in your comparisons. v1.9 was released in January. Also be sure to use --tune PSNR for your PSNR comparisons, and --tune SSIM for your SSIM comparisons. Ideally, use VMAF for your objective comparison.

Can't wait for the new Netflix codec comparison.
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Old 26th September 2017, 18:44   #305  |  Link
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@x265_Project, yes agreed with you, x265 version is pretty old in this comparaison.

from Netflix teaser ( https://bambuser.com/v/6909221#t=2465s ) I don't see the versions but it use vmaf that should be better.

Full Netflix codec comparison should give more details.

HS : x265_Project, is this someone from your team ? https://bambuser.com/v/6909221#t=205
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Old 26th September 2017, 19:41   #306  |  Link
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HS : x265_Project, is this someone from your team ? https://bambuser.com/v/6909221#t=205
Yes, that's Pradeep Ramachandran, who runs the x265 development team (also known as pradeeprama)
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Old 29th September 2017, 08:44   #307  |  Link
Clare
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Evolution of the AV1 codec between October 2016 and July 2017

http://wyohknott.github.io/image-for...omparison.html

I'll add another data point after bitstream freeze.
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Old 29th September 2017, 16:59   #308  |  Link
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Clare, in your image comparison page, the old and the new AV1 images are completely identical. Other than that, it's a very useful page, much appreciated.
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Old 29th September 2017, 21:39   #309  |  Link
Clare
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Clare, in your image comparison page, the old and the new AV1 images are completely identical. Other than that, it's a very useful page, much appreciated.
I don't know the files got mixed but it should work now.
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Old 29th September 2017, 21:43   #310  |  Link
mzso
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I don't know the files got mixed but it should work now.
Wow. the new one is even worse than the old (which is pretty bad alread) on that factory image. Large almost flat areas.
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Old 30th September 2017, 13:56   #311  |  Link
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@clare

could you add PIK ( https://github.com/google/pik ) in a next comparison ?
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Old 30th September 2017, 14:56   #312  |  Link
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Thanks Clare.

Quote:
Originally Posted by mzso View Post
Wow. the new one is even worse than the old (which is pretty bad alread) on that factory image. Large almost flat areas.
Unfortunately, i have to agree. AV1 still image encoding has improved in some regards (less ringing), but it smoothes a bit too much for my liking. In many cases the old AV1 looks better than the new in my opinion.
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Old 5th October 2017, 00:27   #313  |  Link
IgorC
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I've watched some images from here http://wyohknott.github.io/image-formats-comparison/
And yes, AV1 and HEVC don't retain fine details as much as Daala but they have less blocking though.
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Old 8th October 2017, 12:59   #314  |  Link
Clare
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@clare

could you add PIK ( https://github.com/google/pik ) in a next comparison ?
Yeah some guy from Mozilla asked for Pik too, but the thing seems to require a lot of CPU power and I just have a mobile CPU.
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Old 9th October 2017, 19:11   #315  |  Link
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Yeah some guy from Mozilla asked for Pik too, but the thing seems to require a lot of CPU power and I just have a mobile CPU.
@Clare Here you go:
subset1 | subset2

Encoded with --distance 3 (maximum compression). Images are still larger than the ones used in your current comparison, especially the more compressible ones.
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Old 20th October 2017, 20:34   #316  |  Link
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Demuxed 2017 videos are on their Youtube channel (https://www.youtube.com/channel/UCIc...9UgUSTvWVNCmpA). Apparently the AV1 still image format will be called AVIF.
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Old 21st October 2017, 02:19   #317  |  Link
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This is a screenshot from the October 5th Demuxed video in the post above this. Its a shame the version of x265 is old that they are comparing this to and no x264 to compare to.
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Old 22nd October 2017, 17:12   #318  |  Link
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This is a screenshot from the October 5th Demuxed video in the post above this. Its a shame the version of x265 is old that they are comparing this to and no x264 to compare to.
Also, these aren't particularly great metrics for moving images; none of them include any temporal component to detect things like keyframe strobing.

DMOS is the gold standard of course, but is expensive and non-automatable. I would like to see at least VMAF scores, as VMAF looks to be the substantially best objective video metric available, at least for SDR <=1080p and >300 Kbps.

I am baffled by the use of such an old x265 build. Even in placebo it'll run a ton faster than the current AV1 reference implementation. So it'd be trivial to rerun the test at the same time the final tests for AV1 are done for a presentation like this.

Are the different command lines used for the different codecs listed somewhere?
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Old 24th October 2017, 14:15   #319  |  Link
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In case anyone else was confused like I was, the still image format based on AV1 called AVIF is mentioned (briefly) in a video mostly on other topics, given by Netflix at the Demuxed conference, not in either of the two videos that mention AV1 in their titles:

https://www.youtube.com/watch?v=PSdhW-R9u6s
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Old 25th October 2017, 08:06   #320  |  Link
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AV1 status report (Oct 20, 2017)

https://www.youtube.com/watch?v=yKEDf5-2sT4
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