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Old 28th February 2021, 01:00   #381  |  Link
Yups
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Quote:
Originally Posted by ukmark View Post
With Ice Lake these are only available with GPU EU encoding (which is MUCH slower).

It is but you can try non FF TU7/fastest preset where you can use 16 bframes+bpyramid, it's fast and the quality is better than TU1/best FF no bframes+bpyramid according to my tests. Same video from #379:

TU7 16 bframes+pyramid PSNR-Y: 29.45---3337 kbit---116 fps
TU1 FF no bframes/pyramid PSNR-Y: 28.95---3432 kbit---81 fps
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Old 28th February 2021, 02:01   #382  |  Link
RanmaCanada
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Thanks for these tests, as it is extremely difficult to find quicksync encode information on forums. Everything is usually NVENC or x265.
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Old 28th February 2021, 15:34   #383  |  Link
ukmark
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Quote:
Originally Posted by Yups View Post
It is but you can try non FF TU7/fastest preset where you can use 16 bframes+bpyramid, it's fast and the quality is better than TU1/best FF no bframes+bpyramid according to my tests. Same video from #379:

TU7 16 bframes+pyramid PSNR-Y: 29.45---3337 kbit---116 fps
TU1 FF no bframes/pyramid PSNR-Y: 28.95---3432 kbit---81 fps
Thanks - I'll give that a go!
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Old 28th February 2021, 21:26   #384  |  Link
Nico8583
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Very interesting, I'm a SW user but I would like to try Intel HW. Is it possible with an Intel 8500 (UHD 630) ? Is the quality will be the same than newer CPU, just the speed slower ? Thank you.
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Old 28th February 2021, 22:37   #385  |  Link
Tenkei
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I'd love to see some tests at higher bitrates, like 10 Mbps+.
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Old 1st March 2021, 00:05   #386  |  Link
Yups
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Very interesting, I'm a SW user but I would like to try Intel HW. Is it possible with an Intel 8500 (UHD 630) ? Is the quality will be the same than newer CPU, just the speed slower ? Thank you.

No it won't be the same unfortunately, HD630 is Gen9.5 based which is old gen. Intel upgraded their HEVC encoder with Icelake (Gen11): https://forum.doom9.org/showpost.php...&postcount=317

With Tigerlake there is another upgrade to the HEVC FF encoder (bframes+bpyramid support).
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Old 1st March 2021, 00:34   #387  |  Link
Nico8583
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Thank you, I'll try it in the future if I buy a Gen11 Intel CPU
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Old 1st March 2021, 00:37   #388  |  Link
Yups
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Thank you, I'll try it in the future if I buy a Gen11 Intel CPU

If you buy new, you should better buy something with Gen12/Iris Xe graphics.
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Old 1st March 2021, 00:47   #389  |  Link
Nico8583
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If you buy new, you should better buy something with Gen12/Iris Xe graphics.
Thank you, I don't plan to buy a new setup now but thanks for the information
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Old 1st March 2021, 19:59   #390  |  Link
benwaggoner
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Quote:
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If you buy new, you should better buy something with Gen12/Iris Xe graphics.
Are those available for anything other than laptops yet?
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Old 2nd March 2021, 00:35   #391  |  Link
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Are those available for anything other than laptops yet?

Desktop CPU generation called Rocketlake-S is coming this month with Xe based iGPU, the desktop models have only 32 EUs instead of 96, even though the media capabilities should be the same. Also there are some NUC devices in the market based on Tigerlake-U.
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Old 2nd March 2021, 13:31   #392  |  Link
hajj_3
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Are those available for anything other than laptops yet?
30th march: https://wccftech.com/intel-rocket-la...on-30th-march/
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Old 4th March 2021, 10:16   #393  |  Link
Yups
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It's a pity GPUs are so expensive these days, even a small TU116 Turing with newest NVENC costs 350-500€ which is ridiculous, it makes modern iGPUs much more valuable.
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Old 4th March 2021, 12:37   #394  |  Link
Nico8583
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Originally Posted by Yups View Post
Desktop CPU generation called Rocketlake-S is coming this month with Xe based iGPU, the desktop models have only 32 EUs instead of 96, even though the media capabilities should be the same. Also there are some NUC devices in the market based on Tigerlake-U.
It will be Gen 11, not 12
Intel H410 and B460 will not be compatible with Intel Gen 11 CPU, it's a shame.
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Old 4th March 2021, 13:14   #395  |  Link
Yups
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Quote:
Originally Posted by Nico8583 View Post
It will be Gen 11, not 12
Intel H410 and B460 will not be compatible with Intel Gen 11 CPU, it's a shame.
Rocketlake-S iGPU is based on Xe architecture:


Quote:
Enhanced Intel UHD graphics featuring Intel Xe Graphics architecture.
https://newsroom.intel.com/wp-conten...chitecture.pdf
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Old 6th March 2021, 01:00   #396  |  Link
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Another test. I'm using ToS_1920x800_xdither from this thread and a low bitrate of ~1 Mbit with max 120 gop (Quicksync 121, Intel recommended 5*fps+1 for Quicksync some years ago)

Code:
                                   VMAF      speed       bitrate

Quicksync H265 (27.20.100.9316)
HD630 CQP                          86.78     52 fps      1023 kbit

Iris Xe CQP FF best                90.04     344 fps     1028 kbit
Iris Xe CQP best                   90.55     97 fps      1014 kbit

NVENC H265 (461.81)
GTX1080 CQP best                   85.86     215 fps     1023 kbit


x265 (Staxrip 2.1.8.4)
i7-1165G7 ultrafast                87.23     81 fps      1017 kbit
i7-1165G7 ultrafast CRF            84.80     83 fps      1023 Kbit
i7-1165G7 ultrafast QP             83.90     83 fps      1001 Kbit

i7-1165G7 medium                   90.13     28.5 fps    1013 Kbit
i7-1165G7 slow                     92.47     10.7 fps    1014 Kbit

I did us CQP 27_27_29 offset 2_3_7 bframes 16 for Iris Xe if someone is curious, same on HD 630 except for the CQP parameter.

Last edited by Yups; 7th March 2021 at 11:04.
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Old 6th March 2021, 14:26   #397  |  Link
Tenkei
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Originally Posted by Yups View Post
Another test. I'm using ToS_1920x800_xdither from this thread and a low bitrate of ~1 Mbit with max 120 gop (Quicksync 121, Intel recommended 5*fps+1 for Quicksync some years ago)
Can you test higher bitrates (around 10 or more)?
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Old 6th March 2021, 18:12   #398  |  Link
Yups
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Yes I can but 10Mbit on this video is pointless, it's too much for making a difference. In general the differences will narrow down with more bitrate. I may try a 4K 50 Mbit sample converted to 20 Mbit later one.
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Old 6th March 2021, 23:41   #399  |  Link
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I'm using this this sample with a bitrate between 18.0-18.8 Mbit and 10 bit. All of them have a good quality with this high bitrate, a faster Quicksync preset makes sense in this case. I think I could even try fastest FF.

Code:
                                   VMAF      speed       bitrate

Quicksync H265 (27.20.100.9316)
HD630 CQP                          97.45     15 fps      18.5 Mbit

Iris Xe CQP FF best                98.33     67 fps      18.8 Mbit
Iris Xe CQP fastest                98.09     107 fps     18.2 Mbit
Iris Xe CQP best                   98.46     29.5 fps    18.7 Mbit

NVENC H265 (465.51)
GTX1080 CQP best                   96.43     87 fps      18.0 Mbit


x265 (Staxrip 2.1.8.4)
i7-1165G7 medium                   97.70     4.8 fps     18.4 Mbit
i7-1165G7 slow                     98.44     2.1 fps     18.5 Mbit

Last edited by Yups; 13th March 2021 at 21:11.
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Old 7th March 2021, 19:02   #400  |  Link
Tenkei
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Iris Xe really holds up against software encoding, at least in metrics. Do you see any visual differences between Iris Xe best and x265 slow? NVENC tends to remove details to get better compression for the image as a whole. Could you upload the encoded clips?
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