Multilevel L0/L1 references now not working

Multilevel L0/L1 references now not working - Printable Version

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Multilevel L0/L1 references now not working - RedDwarf - 04.10.2023

I have been having problems with Hybrid for quite some time, at some point it stopped allowing me to select Multilevel L0/L1 References when using NVEnc. I have used this in the past, I cannot remember where it worked unfortunately. That was many many nVidia driver updates back.
The Multilevel L0/L1 tick box cannot be ticked or slider cannot be adjusted on either H264 or H265 encoding.

Has support for the Multilevel L0/L1 references been removed by nVidia?

Hybrid 2023.03.17.1 on Windows 10 x64
nVidia driver currently 537.13
GTX 1660 Turin Core supporting H.264/H.265 encoding

RE: Multilevel L0/L1 references now not working - Selur - 04.10.2023

iirc. it was possible to enable it in some versions, even when it did not work, that said.
Check the output of

<Path the Hybrid\64bit\NVEncC.exe> --check-features

and share the output (can be copy&pasted; no screenshot please).

It might also be that NVEnCC changed the way it reports the features, which confused Hybrid.
-> I'll look into it if you share the output of '--check-features' on your system.

Here's how the output looks on my system:

NVEncC (x64) 7.31 (r2580) by rigaya, Aug 28 2023 13:07:12 (VC 1929/Win)

  [NVENC API v12.1, CUDA 10.1]

 reader: raw, y4m, avi, avs, vpy, avsw, avhw [H.264/AVC, H.265/HEVC, MPEG2, VP8, VP9, VC-1, MPEG1, MPEG4, AV1]

Environment Info

OS : Windows 11 x64 (22621) [UTF-8]

CPU: AMD Ryzen 9 7950X 16-Core Processor [5.50GHz] (16C/32T)

RAM: Used 7648 MB, Total 64632 MB

#0: NVIDIA GeForce RTX 4080 (9728 cores, 2505 MHz)[PCIe4x16][537.42]

NVEnc features

Codec: H.264/AVC

Encoder Engines           2

Max Bframes               4

B Ref Mode                3 (each + only middle)

RC Modes                  63 (CQP, CBR, CBRHQ, VBR, VBRHQ)

Field Encoding            0 (no)

MonoChrome                no

FMO                       no

Quater-Pel MV             yes

B Direct Mode             yes

CABAC                     yes

Adaptive Transform        yes

Max Temporal Layers       4

Hierarchial P Frames      yes

Hierarchial B Frames      yes

Max Level                 62 (6.2)

Min Level                 10 (1)

4:4:4                     yes

Min Width                 145

Max Width                 4096

Min Height                49

Max Height                4096

Multiple Refs             yes

Max LTR Frames            8

Dynamic Resolution Change yes

Dynamic Bitrate Change    yes

Forced constant QP        yes

Dynamic RC Mode Change    no

Subframe Readback         yes

Constrained Encoding      yes

Intra Refresh             yes

Custom VBV Bufsize        yes

Dynamic Slice Mode        yes

Ref Pic Invalidiation     yes

PreProcess                no

Async Encoding            yes

Max MBs                   65536

Lossless                  yes

SAO                       no

Me Only Mode              1 (I,P frames)

Lookahead                 yes

AQ (temporal)             yes

Weighted Prediction       yes

10bit depth               no

Codec: H.265/HEVC

Encoder Engines           2

Max Bframes               5

B Ref Mode                3 (each + only middle)

RC Modes                  63 (CQP, CBR, CBRHQ, VBR, VBRHQ)

Field Encoding            0 (no)

MonoChrome                no

Quater-Pel MV             yes

B Direct Mode             no

Max Temporal Layers       0

Hierarchial P Frames      no

Hierarchial B Frames      no

Max Level                 186 (6.2)

Min Level                 30 (1)

4:4:4                     yes

Min Width                 129

Max Width                 8192

Min Height                33

Max Height                8192

Multiple Refs             yes

Max LTR Frames            7

Dynamic Resolution Change yes

Dynamic Bitrate Change    yes

Forced constant QP        yes

Dynamic RC Mode Change    no

Subframe Readback         yes

Constrained Encoding      yes

Intra Refresh             yes

Custom VBV Bufsize        yes

Dynamic Slice Mode        yes

Ref Pic Invalidiation     yes

PreProcess                no

Async Encoding            yes

Max MBs                   262144

Lossless                  yes

SAO                       yes

Me Only Mode              1 (I,P frames)

Lookahead                 yes

AQ (temporal)             yes

Weighted Prediction       yes

10bit depth               yes

Codec: AV1

Encoder Engines           2

Max Bframes               7

B Ref Mode                3 (each + only middle)

RC Modes                  3 (CQP, CBR, VBR)

Field Encoding            0 (no)

MonoChrome                no

Quater-Pel MV             yes

B Direct Mode             no

Max Temporal Layers       0

Hierarchial P Frames      no

Hierarchial B Frames      no

Max Level                 23 (7.3)

Min Level                 0 (2)

4:4:4                     no

Min Width                 192

Max Width                 8192

Min Height                128

Max Height                8192

Multiple Refs             yes

Max LTR Frames            4

Dynamic Resolution Change yes

Dynamic Bitrate Change    yes

Forced constant QP        yes

Dynamic RC Mode Change    no

Subframe Readback         yes

Constrained Encoding      no

Intra Refresh             yes

Custom VBV Bufsize        yes

Dynamic Slice Mode        no

Ref Pic Invalidiation     yes

PreProcess                no

Async Encoding            yes

Max MBs                   262144

Lossless                  no

SAO                       no

Me Only Mode              0 (no)

Lookahead                 yes

AQ (temporal)             yes

Weighted Prediction       no

10bit depth               yes

NVDec features

  H.264/AVC:  nv12, yv12

  H.265/HEVC: nv12, yv12, yv12(10bit), yv12(12bit), yuv444, yuv444(10bit), yuv444(12bit)

  MPEG1:      nv12, yv12

  MPEG2:      nv12, yv12

  MPEG4:      nv12, yv12

  VP8:        nv12, yv12

  VP9:        nv12, yv12, yv12(10bit), yv12(12bit)

  VC-1:       nv12, yv12

  AV1:        nv12, yv12, yv12(10bit)

Cu Selur

RE: Multilevel L0/L1 references now not working - RedDwarf - 04.10.2023

Thanks, my features look the same as your RTX 4080 except for mine not supporting AV1 at all. Everything else looks identical.
When I used Hybrid some before my current install the Multilevel Refs could be selected one minute and then just after they could not be used. I tried uninstalling, reinstalling and replacing the settings files which did restore the Multilevel Refs for one encode and after that they became unavailable again until I closed Hybrid and replaced the settings files. Very annoying doing one encode and having to repeat the process. Now I have been unable to use the Multilevel Refs at all on this current Windows install.

I can see that my NVEncC is an older version than the one that you are using, 7.21 compared with 7.31. If you need any further diagnostic info then you only need to ask.

$ NVEncC.exe --check-features

NVEncC (x64) 7.21 (r2490) by rigaya, Mar 13 2023 14:18:26 (VC 1929/Win)

  [NVENC API v12.0, CUDA 10.1]

reader: raw, y4m, avi, avs, vpy, avsw, avhw [H.264/AVC, H.265/HEVC, MPEG2, VP8, VP9, VC-1, MPEG1, MPEG4, AV1]

Environment Info

OS : Windows 10 x64 (19044) [UTF-8]

CPU: Intel Core i7-3770K @ 3.50GHz (4C/8T)

RAM: Used 15973 MB, Total 32641 MB

#0: NVIDIA GeForce GTX 1660 (1408 cores, 1845 MHz)[PCIe3x16][537.13]

NVEnc features

Codec: H.264/AVC

Encoder Engines          1

Max Bframes              4

B Ref Mode                3 (each + only middle)

RC Modes                  63 (CQP, CBR, CBRHQ, VBR, VBRHQ)

Field Encoding            0 (no)

MonoChrome                no

FMO                      no

Quater-Pel MV            yes

B Direct Mode            yes

CABAC                    yes

Adaptive Transform        yes

Max Temporal Layers      4

Hierarchial P Frames      yes

Hierarchial B Frames      yes

Max Level                62 (6.2)

Min Level                10 (1)

4:4:4                    yes

Min Width                145

Max Width                4096

Min Height                49

Max Height                4096

Multiple Refs            yes

Max LTR Frames            8

Dynamic Resolution Change yes

Dynamic Bitrate Change    yes

Forced constant QP        yes

Dynamic RC Mode Change    no

Subframe Readback        yes

Constrained Encoding      yes

Intra Refresh            yes

Custom VBV Bufsize        yes

Dynamic Slice Mode        yes

Ref Pic Invalidiation    yes

PreProcess                no

Async Encoding            yes

Max MBs                  65536

Lossless                  yes

SAO                      no

Me Only Mode              1 (I,P frames)

Lookahead                yes

AQ (temporal)            yes

Weighted Prediction      yes

10bit depth              no

Codec: H.265/HEVC

Encoder Engines          1

Max Bframes              5

B Ref Mode                3 (each + only middle)

RC Modes                  63 (CQP, CBR, CBRHQ, VBR, VBRHQ)

Field Encoding            0 (no)

MonoChrome                no

Quater-Pel MV            yes

B Direct Mode            no

Max Temporal Layers      0

Hierarchial P Frames      no

Hierarchial B Frames      no

Max Level                186 (6.2)

Min Level                30 (1)

4:4:4                    yes

Min Width                129

Max Width                8192

Min Height                33

Max Height                8192

Multiple Refs            yes

Max LTR Frames            7

Dynamic Resolution Change yes

Dynamic Bitrate Change    yes

Forced constant QP        yes

Dynamic RC Mode Change    no

Subframe Readback        yes

Constrained Encoding      yes

Intra Refresh            yes

Custom VBV Bufsize        yes

Dynamic Slice Mode        yes

Ref Pic Invalidiation    yes

PreProcess                no

Async Encoding            yes

Max MBs                  262144

Lossless                  yes

SAO                      yes

Me Only Mode              1 (I,P frames)

Lookahead                yes

AQ (temporal)            yes

Weighted Prediction      yes

10bit depth              yes

NVDec features

  H.264/AVC:  nv12, yv12

  H.265/HEVC: nv12, yv12, yv12(10bit), yv12(12bit), yuv444, yuv444(10bit), yuv444(12bit)

  MPEG1:      nv12, yv12

  MPEG2:      nv12, yv12

  MPEG4:      nv12, yv12

  VP8:        nv12, yv12

  VP9:        nv12, yv12, yv12(10bit), yv12(12bit)

  VC-1:      nv12, yv12

RE: Multilevel L0/L1 references now not working - Selur - 04.10.2023

Try resetting the tool cache.

RE: Multilevel L0/L1 references now not working - RedDwarf - 04.10.2023

I did try that before when it was working for one encode and not for others and it didn't fix anything. I have tried it again, it reset everything including all my settings and it has not altered anything. I have also tried it just for the NVEnc model but again without any alteration.

RE: Multilevel L0/L1 references now not working - Selur - 04.10.2023

I'll look at it tomorrow, probably some typo somewhere. Smile

RE: Multilevel L0/L1 references now not working - RedDwarf - 04.10.2023

Thank you for your help.

Would it help if I tried older versions to see which worked without problems? I was not having these problems many releases back but I don't know which one it was that work 100%. If I knew which ones will work with my current system, Windows 10 and drivers then it would make it a little easier rather than uninstalling and reinstalling repeatedly.

I have the following builds and I know that at least one or more have worked in the past with earlier nVidia drivers. I did use one on Windows 7.

Hybrid_2020.12.13.1_SETUP_Win7
Hybrid_2021.01.31.1_SETUP
Hybrid_2021.04.12.1_SETUP
Hybrid_2021.07.18.1_SETUP
Hybrid_2021.12.05.1_SETUP
Hybrid_2022.03.20.1_SETUP
Hybrid_2023.03.17.1_SETUP

RE: Multilevel L0/L1 references now not working - Selur - 05.10.2023

No, need, it's probably easy to trace and find, will look at it after work.
(had a quick look, I know where the issue is - detected settings are not properly saved - but I need to check where exactly it breaks)

Cu Selur

RE: Multilevel L0/L1 references now not working - Selur - 05.10.2023

Think I fixed it. (was a mixup due to some typo which caused Hybrid to not properly read the toolcache infos.)
Send you a link for testing via pm.

Cu Selur

RE: Multilevel L0/L1 references now not working - RedDwarf - 06.10.2023

It definitely works correctly in Hybrid 2021.01.31.1 but that version is missing many features than newer builds including the cut support to make testing quicker.

That version also doesn't seem to get near to the specified bitrate when using NVEnc and it also doesn't seem to follow the 2 pass full option when specified. It only seems to do 1 pass encoding. I specified 1500 kbps Constant bitrate 2 pass encoding and it totally ignores it and does 1 pass. I have tried both encoding to a file size and to a target bitrate. Only the variable and constant bitrate allow selecting 2 pass encoding whereas the Variable HQ or Constant HQ do not allow 2 pass to be selected. It's the same with H.264 & H.265, none do 2 pass. Is this a known issue?

(05.10.2023, 15:31)Selur Wrote: Think I fixed it. (was a mixup due to some typo which caused Hybrid to not properly read the toolcache infos.)
Send you a link for testing via pm.

Cu Selur

Thanks, that seems to of fixed it, it has completed several small encodes successfully.

There still is the problem with 2 pass not working though but I can post that to a new thread and ask whether it is supposed to do what I believe it should do.

It does also seem to of fixed the default container where it would always start with mp4 even though the standard output container was set to mkv in the options.