Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion. Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules. |
3rd August 2022, 00:40 | #2441 | Link |
Registered User
Join Date: Sep 2011
Posts: 362
|
Intel's WORLD FIRST GPU AV1 encoder was worth the hype
https://youtu.be/ctbTTRoqZsM Very good AV1 result from the Arc A380 in this test. |
3rd August 2022, 08:14 | #2442 | Link |
Registered User
Join Date: Dec 2005
Location: Germany
Posts: 1,795
|
Finally the one area the arc gpus are good at ^^"
__________________
AVSRepoGUI // VSRepoGUI - Package Manager for AviSynth // VapourSynth VapourSynth Portable FATPACK || VapourSynth Database |
4th August 2022, 15:46 | #2443 | Link |
Member
Join Date: Nov 2002
Posts: 203
|
SSIM Comparison for Intel Arc A380 QSV
https://rigaya34589.blog.fc2.com/blog-entry-1501.html |
4th August 2022, 23:08 | #2444 | Link | |
Registered User
Join Date: Sep 2011
Posts: 362
|
Quote:
It's struggling at higher bitrates. Unfortunately he only tested ICQ and didn't check out CBR/VBR/CQP as well as MBBRC and ExtBRC, MB or Ext BRC can sometimes improve the quality. He says HEVC and H264 encoder on Arc improved over ADL-S iGPU by the way. It remains to be seen if AV1 QSV can improve over software improvements. oneVPL AV1 support looks rough at the moment. EposVox made a mistake by not choosing the same gop length in his test, Intel AV1 QSV has a 1s seeking in his samples, means he uses a gop length of 60 (videos are 60 fps). VCE, Intel h264, x264 have a 10s seeking in his encoded videos. As for Intel h264 or h265 QSV a gop increase from 60 to 600 gop should improve the VMAF score by roughly 1 point. Intel hardware AV1 performs really good at 3500 Kbit relative to the others in this test. It's a blocky mess in motion on NVENC or Intel h264. On higher bitrates Intel AV1 QSV detail preservation is quite poor, that's why it's losing relative to the others at higher bitrates. Here is a frame example at 3500Kbit Intel H264 QSV Nvidia H264 NVENC AMD H264 VCE Intel AV1 QSV x264 very slow |
|
9th August 2022, 18:39 | #2445 | Link | ||||
Moderator
Join Date: Jan 2006
Location: Portland, OR
Posts: 4,770
|
Quote:
Quote:
HW encoders get used when watts/encode is really constrained, hard realtime is required, or for applications where bitrates aren't particularly constrained, like mezzanine encoding. Quote:
Quote:
Or maybe I'm looking at the data weird. It seems ARC HEVC normal beats quality, which I would not expect. |
||||
12th August 2022, 17:24 | #2446 | Link | |
Registered User
Join Date: Sep 2011
Posts: 362
|
Quote:
You just misread my posting. There is no HEVC comparison in the test made by EposVox. This part is not related to the rigaya test. https://youtu.be/ctbTTRoqZsM |
|
12th August 2022, 19:41 | #2447 | Link | |
Registered User
Join Date: Dec 2013
Posts: 347
|
Quote:
If I am looking at the ones at 11:50 I think, well, looks like Intel's GPU is getting beaten by a large margin compared to the Intel software encoder set to realtime mode. Also looks like H.264 cannot keep up at 3500k due to higher bitstream overhead but this normalizes out somewhat at 6000k. Only 3 sample points for a graph are suboptimal too, I'd have used 5+. Also keep in mind, H.264 is 20 years old and 1080p@60hz with 3500k comes out to ~1600k at 24hz for non motion blurred content. Hardly what I would call 'worth the hype' but I made no flashy YouTube video about yet to deliver my opinion to my followers. |
|
16th August 2022, 16:13 | #2448 | Link |
Registered User
Join Date: Mar 2008
Posts: 175
|
https://www.asrock.com/Graphics-Card...C/index.us.asp
https://www.newegg.com/asrock-arc-a3...82E16814930076 Intel Arc A380 will be available soon in US, hopefully someone can test the AV1 hardware encoder. Last edited by GTPVHD; 8th October 2023 at 13:56. |
25th August 2022, 21:09 | #2450 | Link |
SuperVirus
Join Date: Jun 2012
Location: Antarctic Japan
Posts: 1,351
|
I was bored so I built the SVT-AV1 encoder version 1.2.1.
NOTICE: running "svtav1encapp --version" returns "SVT-AV1 v1.2.0 (release)" But I tested the .EXE against a Version.avs file and it worked :-| https://www.mediafire.com/file/h14la...1.2.1.rar/file |
30th August 2022, 18:37 | #2451 | Link | ||
Moderator
Join Date: Jan 2006
Location: Portland, OR
Posts: 4,770
|
Quote:
Quote:
Motion blur is a whole other matter. 60p stuff tends to have a 1/60th of a second shutter at the slowest, and can be much, much faster for daylight shoots. 24p, except for cell animation, almost always used a 1/48th of a second shutter. Generally more motion blur is helpful for encoding, although there are complexities that sometimes confound that. My rule of thumb is that doubling the frame rate requires a 20-40% increase in bitrate, content dependent. If it's the same content (like encoding a 60p source at 60p and 30p), it's on the lower end of the range. |
||
8th September 2022, 20:12 | #2452 | Link | |
Registered User
Join Date: Dec 2013
Posts: 347
|
Quote:
I agree for normal shot content but the R/D graph I meant was for captured video game content. So most likely no motion blur + hard edges/contrast + small detail. My guess is that it requires a ~80% increase in rate to keep the same quality when doubling the frame rate. The only thing I can see it saving is motion vector length really. |
|
10th September 2022, 11:21 | #2453 | Link |
German doom9/Gleitz SuMo
Join Date: Oct 2001
Location: Germany, rural Altmark
Posts: 6,779
|
New uploads: (MSYS2; MinGW32 / MinGW64: GCC 12.2.0)
AOM v3.4.0-397-gaeee77c48 rav1e 0.5.1_g25f6c0f Clang 14.0.6 dav1d 1.0.0-61-g5247319 SVT-AV1 v1.2.1-17-g470e1823 avif 0.10.1_6624e76 dav1d [dec]:1.0.0-61-g5247319, aom [enc/dec]:3.4.0-397-gaeee77c48, rav1e [enc]:0.5.0 (p20220906-3-g25f6c0f) |
16th September 2022, 18:06 | #2454 | Link | |
Moderator
Join Date: Jan 2006
Location: Portland, OR
Posts: 4,770
|
Quote:
|
|
16th September 2022, 18:09 | #2455 | Link |
Moderator
Join Date: Jan 2006
Location: Portland, OR
Posts: 4,770
|
I was a little surprised by how little discussion of AV1 there was at IBC this year. Support was mentioned here and there, but I certainly saw a lot more VVC demos, and discussion of real-world VVC products.
8K talk was also quite muted, and VR/AR wasn't as prominent either. Sustainability was talked about way more than ever before, as Europe faces a winter energy crisis due to Russia this winter. |
20th September 2022, 16:32 | #2456 | Link | |||
Registered User
Join Date: Mar 2008
Posts: 175
|
https://nvidianews.nvidia.com/news/n...-rtx-40-series
Quote:
Quote:
Quote:
Last edited by GTPVHD; 20th September 2022 at 18:07. |
|||
20th September 2022, 18:13 | #2457 | Link | |
Moderator
Join Date: Jan 2006
Location: Portland, OR
Posts: 4,770
|
Quote:
I wish claims like "For livestreamers, the new AV1 encoder delivers 40% better efficiency." would specify "compared to." ! If it is only 40% over AVC, that's a bit underwhelming. There's lots of good tools in AV1 for encoding game content that probably aren't being used by the hardware. |
|
21st September 2022, 06:49 | #2459 | Link |
Registered Developer
Join Date: Mar 2010
Location: Hamburg/Germany
Posts: 10,346
|
The 40% is a comparison against H264 at 1080p, since that what majority of streaming is using right now, and what they hope to push AV1 into, since HEVC never took off in that space.
Higher resolutions would of course benefit more, but due to H264 still being prevalent there, it was not used often. Maybe that'll change when modern codecs take over? Of course streaming is a special use-case for encoding wanting extra low latency, which precludes some features, and hardware encoding also tends to avoid some features that are not well suited to hardware processing. But 40% improvements for streaming should still be quite nice.
__________________
LAV Filters - open source ffmpeg based media splitter and decoders |
22nd September 2022, 01:20 | #2460 | Link | ||
Moderator
Join Date: Jan 2006
Location: Portland, OR
Posts: 4,770
|
Quote:
Quote:
|
||
Thread Tools | Search this Thread |
Display Modes | |
|
|