Selur's Little Message Board

Hey bro I have an issue and I hope you can help me with it. So I have multiple 1920X1080 16:9 videos that are AV1 and they are 60FPS. I use NVENC and set constant bit rate HQ and set the bit rate to 10000k and use h265 or even h264 or even leave it AV1 but no matter what the result is 58FPS instead of 60FPS.
Interlace is disabled and I'm not using any filters or anything simply changing the codec and reducing the bit rate. Everything else is default options from when I installed the program. My question is is there anything I need to disable or change to fix this? Thank you in advance.

Without a debug output (read the sticky) and any real details, I can only suspect what is happening.
So my guess is that your source if vfr input and the time codes get either ignored in the process or they are not ignored but the first or a few entries in them get fixed and that causes the average frame rate to change.
-> share a debug output, then I can look at that and see what's happening.

Cu Selur

Here is a zip file containing the debug as you requested.

Quote:I have multiple 1920X1080 16:9 videos that are AV1 and they are 60FPS.

Did you share the right debug output, since the source gets reported by mediainfo as:

Code:
Video

Count                                    : 381

Count of stream of this kind             : 1

Kind of stream                           : Video

Kind of stream                           : Video

Stream identifier                        : 0

StreamOrder                              : 0

ID                                       : 1

ID                                       : 1

Unique ID                                : 7136786160922341380

Format                                   : AV1

Format                                   : AV1

Format/Info                              : AOMedia Video 1

Format/Url                               : http://aomedia.org/

Commercial name                          : AV1

Format profile                           : Main@L5.0

Codec ID                                 : V_AV1

Codec ID/Url                             : http://aomedia.org/

Duration                                 : 1325949.000000

Duration                                 : 22 min 5 s

Duration                                 : 22 min 5 s 949 ms

Duration                                 : 22 min 5 s

Duration                                 : 00:22:05.949

Duration                                 : 00:22:06;08

Duration                                 : 00:22:05.949 (00:22:06;08)

Bit rate                                 : 4248653

Bit rate                                 : 4 249 kb/s

Width                                    : 1920

Width                                    : 1 920 pixels

Height                                   : 1080

Height                                   : 1 080 pixels

Sampled_Width                            : 1920

Sampled_Height                           : 1080

Pixel aspect ratio                       : 1.001

Display aspect ratio                     : 1.779

Display aspect ratio                     : 16:9

Frame rate mode                          : VFR

Frame rate mode                          : Variable

Frame rate                               : 23.976

Frame rate                               : 23.976 (23976/1000) FPS

FrameRate_Num                            : 23976

FrameRate_Den                            : 1000

Frame count                              : 31792

Color space                              : YUV

Chroma subsampling                       : 4:2:0

Chroma subsampling                       : 4:2:0

Bit depth                                : 8

Bit depth                                : 8 bits

Bits/(Pixel*Frame)                       : 0.085

Delay                                    : 0

Delay                                    : 00:00:00.000

Delay                                    : 00:00:00;00

Delay                                    : 00:00:00.000 (00:00:00;00)

Delay, origin                            : Container

Delay, origin                            : Container

Stream size                              : 704210130

Stream size                              : 672 MiB (12%)

Stream size                              : 672 MiB

Stream size                              : 672 MiB

Stream size                              : 672 MiB

Stream size                              : 671.6 MiB

Stream size                              : 672 MiB (12%)

Proportion of this stream                : 0.11902

Writing library                          : Lavc59.52.102 av1_nvenc

Writing library                          : Lavc59.52.102 av1_nvenc

Default                                  : No

Default                                  : No

Forced                                   : No

Forced                                   : No

colour_description_present               : Yes

colour_description_present_Source        : Container / Stream

Color range                              : Limited

colour_range_Source                      : Container / Stream

colour_primaries_Source                  : Stream

transfer_characteristics_Source          : Stream

Matrix coefficients                      : BT.470 System B/G

matrix_coefficients_Source               : Container / Stream

Video gets encoded with:

Code:
"C:\Program Files\Hybrid\64bit\ffmpeg.exe" -y -loglevel fatal -noautorotate -nostdin -threads 8 -i "D:\Video stuff\FOTNS\Yu-Gi-Oh! Duel Monsters - 022 - Duel of Destiny! Yugi vs Kaiba_new_chr2_amq13.mkv" -map 0:0 -an -sn -vf zscale=rangein=tv:range=tv -pix_fmt yuv420p10le -strict -1 -vsync 0 -f yuv4mpegpipe - | "C:\Program Files\Hybrid\64bit\NVEncC.exe" --y4m -i - --fps 23.976 --codec h265 --profile main10 --level auto --tier high --sar 1:1 --lookahead 16 --output-depth 10 --cbrhq 500 --max-bitrate 800000 --gop-len 0 --ref 3 --bframes 3 --bref-mode disabled --no-b-adapt --mv-precision Q-pel --preset default --colorrange limited --colormatrix bt470bg --cuda-schedule sync --output "C:\Users\thebl\AppData\Local\Temp\TEST VIDEO_2023-01-08@11_01_31_4410_02.265"

Encoder reports:

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

CPU            13th Gen Intel Core i9-13900KF [5.52GHz] (8P+16E,24C/32T)

GPU            #0: NVIDIA GeForce RTX 4090 (16384 cores, 2535 MHz)[PCIe4x16][528.02]

NVENC / CUDA   NVENC API 12.0, CUDA 12.0, schedule mode: sync

Input Buffers  CUDA, 32 frames

Input Info     y4m(yv12(10bit))->p010 [AVX2], 1920x1080, 24000/1001 fps

Vpp Filters    copyHtoD

Output Info    H.265/HEVC main10 @ Level auto

               1920x1080p 1:1 23.976fps (24000/1001fps)

Encoder Preset default

Rate Control   CBR

Multipass      2pass-full

Bitrate        500 kbps (Max: 800000 kbps)

Target Quality auto

Initial QP     I:20  P:23  B:25

QP Offset      cb:0  cr:0

VBV buf size   auto

Lookahead      on, 16 frames, Adaptive I Insert

GOP length     240 frames

B frames       3 frames [ref mode: disabled]

Ref frames     3 frames, MultiRef L0:auto L1:auto

AQ             off

CU max / min   auto / auto

VUI            matrix:bt470bg,range:limited

Others         mv:Q-pel

(seems like when encoding the video stream fps of the video wasn't properly set, normally the frame rate of the video should indicate the average frame rate.)

Since the content is vfr, Hybrid, by default, does passthrough the time codes:

Code:
"C:\Program Files\Hybrid\64bit\mkvmerge.exe" --ui-language en -o "D:\2023-01-08@11_01_31_4410__03.mkv" --global-tags "C:\Users\thebl\AppData\Local\Temp\mkvtags_2023-01-08@11_01_31_4410__03.xml" -d 0 --default-track 0:yes --default-duration "0:24000/1001fps" --aspect-ratio-factor 0:1/1 --no-chapters --compression -1:none --forced-track 0:yes --field-order 0:0 --no-audio --no-subtitles --timecodes 0:"C:\Users\thebl\AppData\Local\Temp\timecodeV2_2023-01-08@11_01_31_4410.tc" "C:\Users\thebl\AppData\Local\Temp\TEST VIDEO_2023-01-08@11_01_31_4410_02.265"

So there should be no 60fps or 59.xx fps unless the time codes indicate such a frame rate.
Looking at the time codes:

Code:
# timestamp format v2

  0

  17

  33

  50

  67

  83

  100

  117

  133

  150

  167

  183

  200

  217

  233

  250

  267

  283

  300

  317

  333

  350

  367

  383

  400

  417

  433

  450

  467

  483

  500

  517

  533

  550

  567

  583

  600

  617

  633

  650

  667

  683

  700

....

Hybrid did not change the time codes, so the output should still be sync and the difference is just a cosmetic difference caused by the tool you used to check the time codes.
Time codes jump per frame between 16ms and 17ms per frame, so the frame rate is between 1000/16=62.5 and 58,82.. fps.
1000/60 is 16.66.. ms per frame, which would fit, Hybrid did calculate the average frame rate and reported:
[quote]Current frame rate: 59.944 differs from average time code frame rate: 23.976.
This will be ignored since 'Check average fps of mkv/mp4 files' is disabled.[/code]
If 'Config->Automation->Matroska Settings->Adjust fps to average fps' were enabled, Hybrid would have changed the fps to 59.944fps.
So not 60fps. (Side note: you might to work over your process to create these files, so that they are not vfr and are flagged properly.)

To fix the fps indicated in the video stream, you could:

enabled 'Filtering->Speed Change->Speed Settings->Change speed' and set it to 60 fps

this will not change the sync due to the time codes, but might help with what players indicate.

Since the time codes seem to match, 60fps with not 'bumps', you could also:

enable 'Filtering->Internals->Handling->Ignore all input time codes', this will cause Hybrid to ignore the time codes and simply detect the source as 23.976 fps as indicated by the video streams and then,
enabled 'Filtering->Speed Change->Speed Settings->Change speed' and set it to 60 fps

This would probably be the best option since it would remove the time codes and make sure the output is flagged as 60fps.

Cu Selur

I will do as you suggested. Yes I did upload the correct video debug. I notice the mediainfo report the same thing on mine which is strange because the video is really 1920x1080 and it is 60FPS. I will use the options mentioned by you and will let you know how it will turn out. Thank you so much for getting back to me with a possible fix.

Orion3000

Selur

Orion3000

Selur

Orion3000