"Double frame repeat" during manual forward rewind.

Hello.
First of all, i wanted to say a HUGE thanks for wonderful codecs. I am using K-Lite since early 2013 (K-Lite Codec Pack v10.1.5 FULL is my all time favourite). A few weeks ago, i decided to check an update, yes-yes, i never done this before, since i always was totally happy with current one. I downloaded and install the latest version with an update (14.01.2020). Then, i run 60 FPS video, and manually rewind forward a few times. I noticed, that frame repeat twice after rewind, just like if i clicked two times in a row. This happens not every time, approximatelly 6 times out of 10. At first, i thought, this is a problem with my left mouse button. But then, i installed older version (the one, that i always use) and, everything work fine. No more "double frame repeat" after rewind. My OS is Windows 7 Maximum Edition (64 bit). Video format is AVI. MPC Home Cinema, Render Settings -> VSync -> VSync is ON.

I tried several versions:
K-Lite Codec Pack 15.3.2
K-Lite Codec Pack 15.2.6
K-Lite Codec Pack 15.2.0

Please, check this.
Thank you.

I am not sure if I understand correctly. Are you clicking on the seekbar or on the framestep button? Can you describe the exact steps you are taking?

I am sorry for such confusing description.
For example, we have 3 minutes long video, and, i want to jump from 01:00 to 01:35
I click at seek bar with mouse cursor, while video is playing, and after this, both sound and image "stutter" and repeat twice. As i mentioned before, this is only occure in latest versions. Very old version that i always use (10.1.5) have no such issue.
Please note, that this happen not with the first click. Sometimes, it happens after 1st click, sometimes after 5th click. Video format is no matter, mp4 or avi, 30 or 60 fps, this happens anyway.

I don't get that problem here.

The problem might be due to hardware accelerated decoding. In the old version that was disabled by default. In the current version it is enabled by default. In rare cases it may give issues due to bugs in graphics drivers.

MPC-HC menu > Play > Filters > LAV Video Decoder
There you can see if hardware decoding is enabled, and you can disable it.

Also copy this log here, so I can see hardware and driver details:
Codec Tweak Tool > Generate Log

Thank you for reply.
I tried to disable LAV Video Decoder. Unfortunately, the problem still persist.

Here is a Log:

Codec Tweak Tool | Log file | Generated at 2020-01-17 06:14:10

##### System Information #####

OS: Windows 7 Ultimate (6.01.7601) (x64)
CPU name: Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz
CPU details: 3093 MHz | 4 core(s) | Family 6 Model 42 Stepping 7
Memory: 16320 MB
Screen size: 1920x1080 (32bits) (60Hz)
GPU 1: NVIDIA GeForce RTX 2070 SUPER
VendorID: 10de, DeviceID: 1e84
GPU memory: 8192 MB
GPU driver: nvd3dumx.dll (Version 26.21.14.4166) (12-6-2019) (NV 441.66)
GPU 2: Intel(R) HD Graphics Family
VendorID: 8086, DeviceID: 0102
GPU memory: 3872 MB
GPU driver: igdumd64.dll (Version 8.15.10.2361) (4-10-2011)
Audio device: NVIDIA High Definition Audio
VendorID: 10de, DeviceID: 0092
Audio driver: nvhda64v.sys (Version 1.3.38.21) (6-21-2019)

##### K-Lite Codec Pack #####

KLCP version: 15.3.2
KLCP type: full

Speaker conf: 2.0

MPC renderer: EVR CP
MPC subs: ISR
MPC audio: System Default
MPC decoder: h264=1 hevc=1 vp9=1 vc1=0 mpeg2=0

##### Decoder Settings #####

LAV Video:
H264=DXVA2CB HEVC=DXVA2CB VP9=DXVA2CB VC1=0 MPEG2=1 MPEG4=1 WMV3=0

LAV Audio:
MP3=1 AC3=1 DTS=1 DTSHD=1 EAC3=1 TRUEHD=1 AAC=1 Vorbis=1 LPCM=1 WMA=0

##### DirectShow Filters (32-bit) #####

Description: Bandisoft MPEG-1 Video Decoder
File name: c:\program files (x86)\bandimpeg1\bdfilters.dll
CLSID: {89C4B786-A490-4A3E-AA70-E6A8C61D3689}
Merit: FF800001

Description: Bandisoft MPEG-1 Audio Decoder
File name: c:\program files (x86)\bandimpeg1\bdfilters.dll
CLSID: {E2E7539A-CECF-4A6A-B187-939943ECEF05}
Merit: FF800001

(A total of 78 filters, 2 shown, 76 hidden)

##### DirectShow Filters (64-bit) #####

Description: Bandisoft MPEG-1 Video Decoder
File name: c:\program files (x86)\bandimpeg1\bdfilters64.dll
CLSID: {89C4B786-A490-4A3E-AA70-E6A8C61D3689}
Merit: FF800001

Description: Bandisoft MPEG-1 Audio Decoder
File name: c:\program files (x86)\bandimpeg1\bdfilters64.dll
CLSID: {E2E7539A-CECF-4A6A-B187-939943ECEF05}
Merit: FF800001

(A total of 84 filters, 2 shown, 82 hidden)

##### ICM Class Manager (32-bit) #####

(A total of 2 filters, 0 shown, 2 hidden)

##### ICM Class Manager (64-bit) #####

(A total of 2 filters, 0 shown, 2 hidden)

##### Default source filters (32-bit) #####

(A total of 64 default source filters, 0 shown, 64 hidden)

##### Default source filters (64-bit) #####

(A total of 56 default source filters, 0 shown, 56 hidden)

##### ACM and VFW Codecs (32-bit) #####

Description: Bandi Motion Jpeg
ID: vidc.mjpg
File name: C:\Windows\SysWOW64\bdmjpeg.dll

Description: Bandi MPEG-1 Video
ID: vidc.mpeg
File name: C:\Windows\SysWOW64\bdmpegv.dll

Description: Bandi MPEG-1 Audio
ID: msacm.bdmpeg
File name: C:\Windows\SysWOW64\bdmpega.acm

(A total of 18 codecs, 3 shown, 15 hidden)

##### ACM and VFW Codecs (64-bit) #####

Description: Bandi Motion Jpeg
ID: vidc.mjpg
File name: C:\Windows\system32\bdmjpeg64.dll

Description: Bandi MPEG-1 Video
ID: vidc.mpeg
File name: C:\Windows\system32\bdmpegv64.dll

Description: Bandi MPEG-1 Audio
ID: msacm.bdmpeg
File name: C:\Windows\system32\bdmpega64.acm

(A total of 17 codecs, 3 shown, 14 hidden)

Does it only happen with 60 fps videos?
And does it need to be a specific video format?

Nope. I tried various videos with 30 fps and 60. It doesn't matter. I tried only mp4 and AVI formats, this is where it is always happens.

Here is a new log, from more powerful PC.
Codec Tweak Tool | Log file | Generated at 2020-01-18 23:11:50

##### System Information #####

OS: Windows 7 Ultimate (6.01.7601) (x64)
CPU name: Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
CPU details: 4008 MHz | 8 core(s) | Family 6 Model 94 Stepping 3
Memory: 16320 MB
Screen size: 1920x1080 (32bits) (60Hz)
GPU: NVIDIA GeForce RTX 2070 SUPER
VendorID: 10de, DeviceID: 1e84
GPU memory: 8192 MB
GPU driver: nvd3dumx.dll (Version 26.21.14.4166) (12-6-2019) (NV 441.66)
Audio device: Realtek High Definition Audio
VendorID: 10ec, DeviceID: 0900, SubSys: 10438691
Audio driver: RTKVHD64.sys (Version 6.0.1.8158) (5-16-2017)

##### K-Lite Codec Pack #####

KLCP version: 15.3.4 (base 15.3.2)
KLCP type: full

Speaker conf: 2.0

MPC renderer: EVR CP
MPC subs: ISR
MPC audio: System Default
MPC decoder: h264=DXVA2N hevc=DXVA2N vp9=DXVA2N vc1=0 mpeg2=0

##### Decoder Settings #####

LAV Video:
H264=DXVA2CB HEVC=DXVA2CB VP9=DXVA2CB VC1=0 MPEG2=1 MPEG4=1 WMV3=0

LAV Audio:
MP3=1 AC3=1 DTS=1 DTSHD=1 EAC3=1 TRUEHD=1 AAC=1 Vorbis=1 LPCM=1 WMA=0

##### DirectShow Filters (32-bit) #####

Description: Bandisoft MPEG-1 Video Decoder
File name: c:\program files (x86)\bandimpeg1\bdfilters.dll
CLSID: {89C4B786-A490-4A3E-AA70-E6A8C61D3689}
Merit: FF800001

Description: Bandisoft MPEG-1 Audio Decoder
File name: c:\program files (x86)\bandimpeg1\bdfilters.dll
CLSID: {E2E7539A-CECF-4A6A-B187-939943ECEF05}
Merit: FF800001

(A total of 78 filters, 2 shown, 76 hidden)

##### DirectShow Filters (64-bit) #####

Description: Bandisoft MPEG-1 Video Decoder
File name: c:\program files (x86)\bandimpeg1\bdfilters64.dll
CLSID: {89C4B786-A490-4A3E-AA70-E6A8C61D3689}
Merit: FF800001

Description: Bandisoft MPEG-1 Audio Decoder
File name: c:\program files (x86)\bandimpeg1\bdfilters64.dll
CLSID: {E2E7539A-CECF-4A6A-B187-939943ECEF05}
Merit: FF800001

(A total of 84 filters, 2 shown, 82 hidden)

##### ICM Class Manager (32-bit) #####

(A total of 2 filters, 0 shown, 2 hidden)

##### ICM Class Manager (64-bit) #####

(A total of 2 filters, 0 shown, 2 hidden)

##### Default source filters (32-bit) #####

(A total of 64 default source filters, 0 shown, 64 hidden)

##### Default source filters (64-bit) #####

(A total of 56 default source filters, 0 shown, 56 hidden)

##### ACM and VFW Codecs (32-bit) #####

Description: Bandi Motion Jpeg
ID: vidc.mjpg
File name: C:\Windows\SysWOW64\bdmjpeg.dll

Description: Bandi MPEG-1 Video
ID: vidc.mpeg
File name: C:\Windows\SysWOW64\bdmpegv.dll

Description: Bandi MPEG-1 Audio
ID: msacm.bdmpeg
File name: C:\Windows\SysWOW64\bdmpega.acm

(A total of 17 codecs, 3 shown, 14 hidden)

##### ACM and VFW Codecs (64-bit) #####

Description: Bandi Motion Jpeg
ID: vidc.mjpg
File name: C:\Windows\system32\bdmjpeg64.dll

Description: Bandi MPEG-1 Video
ID: vidc.mpeg
File name: C:\Windows\system32\bdmpegv64.dll

Description: Bandi MPEG-1 Audio
ID: msacm.bdmpeg
File name: C:\Windows\system32\bdmpega64.acm

(A total of 16 codecs, 3 shown, 13 hidden)

Does it also happen with for example a downloaded movie? Or are the affected files all screen recordings? Such files can actually have repeated frames.

Is it possible for me to download any of those files? Like through a torrent. Or if you could upload a file that would be fine as well. Then I can test it on my computer.

What you can also try is selecting a different video renderer, such as madVR:
MPC-HC options > Playback > Output

Good question.
I didn't try to watch downloaded movie with new codecs, i tested them only with screen recorded videos. I will check it.
I can upload video, that was made for my youtube channel. It was recorded in AVI format, Renderer Setting -> VSync -> ON. MEGA link is fine?
https://mega.nz/#!g6ghCK6I!O1lRqHJY_vighAonDQtQx-tQo3qtHUfkppy14cmLEG8

I'll check the different video renderer and report about results.

I just watched a few anime episodes with latest codecs, and also tried to change video renderer. Alas, but the problem is still persist.

Disable VSync or enable Accurate VSync. That should improve playback with this file.

Windows itself already does VSync (except when using classic theme), so it is not essential to have it enabled in the player.

I use classic theme.
Accurate VSync doesn't work as good, as normal VSync, i tried. Video is "jittering" most of the time.

Try Sync renderer or madVR.

options > playback > output

I tried Sync renderer and madVR. All the same.
VSync always was enable, so, this is not a problem for me.

Yesterday, I got bad framerate with just standard VSync. Today it plays fine with and without VSync, even with classic theme. Weird.

If the repeat happens even with madVR, then I am not sure what might be the cause of your problem.

I do recommend to change this NVIDIA setting as its default value can cause stuttering:
NVIDIA Control Panel > Manage 3D Settings > Power Management Mode > select "Adaptive"

Thank you. I will try.