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Topic: Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera (Read 522 times) previous topic - next topic

Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera

We use Splitcam on several PCs and Notebooks - works fine.
Except one model: Lenovo ThinkPad L15 Gen 3 (AMD) with integrated Realtek Camera

  • The Camera works fine when Splitcam is NOT installed.
  • When Splitcam is installed the Camera doesn't deliver video any more, Videoconferencing etc... shows only "black" when selecting the "Integrated Camera".
  • Selecting Splitcam doesn't work because Splitcam crashes.
  • After Uninstalling Splitcam -> Camera works.
  • After ReInstalling Splitcam: Camera shows only "black" again.
  • We tried several older as well as the most current 10.6.36 Version of Splitcam.

Splitcam itself crashes on this Notebook-Type when loading.
We found out, that the crash has to do with the camera loading. When the "Media Layer" has no "Web Camera" added Splitcam starts without error.

When adding "Web Camera" to the Media Layer it crashes: UNEXPECTED ERROR. See log output for more info. Code: 0xC0000005. Flags: 0. Address: 0x.... (Address changes every time SplitCam crashes)

Log shows following Error when adding "Web Camera" at 13:02:58:
Code: [Select]
13:02:50 SplitCam starting: v10.6.36 x64
13:02:50 CPUID: AMD64 Family 25 Model 80 Stepping 0, AuthenticAMD
13:02:50 Processor: AMD Ryzen 3 PRO 5475U with Radeon Graphics
13:02:50 OS: Microsoft Windows 10 Enterprise 10.0.19044 64-Bit
....
13:02:51 1 GPU found in the system.
13:02:51   AMD GPU: AMD Radeon (TM) Graphics
...
13:02:58 MiniWindow pos: x: 1332 y: 108 w: 480 h: 269
13:02:58 Creating dialog class ui::CStatisticsWindow, "CPU" at (1332, 205) of size 640x392
13:02:58 Creating dialog class ui::CStatisticsWindow, "GPU" at (1332, 205) of size 640x392
13:02:58 Creating dialog class ui::CStatisticsWindow, "RAM" at (1332, 205) of size 640x392
13:02:58 Creating dialog class ui::CStreamStatistics, "Stream Statistics" at (1332, 205) of size 640x392
13:02:58 Creating dialog class ui::CFloatingPanelsList, "Floating panels" at (1447, 142) of size 250x200
13:03:09 Enumerating audio inputs
13:03:09   0: Mikrofonarray (Realtek High Definition Audio) {@device:cm:{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave:{047136A1-8975-428D-B18B-2A256ED8E388}}
13:03:12 Creating dialog class ui::CDlgAddCamera, "Add Camera" at (640, 324) of size 640x392
13:03:12 Looking for available video capture devices
13:03:12 Found 2 video capture devices
13:03:12 Updating list of available video capture devices
13:03:12 Enumerating webcams
13:03:12   Integrated Camera: {\\?\usb#vid_174f&pid_1812&mi_00#8&37760979&0&0000#{e5323777-f976-4f5b-9b55-b94699c46e44}\global}
13:03:12 Creating video capture sources
13:03:12 Creating video capture renderers
13:03:12 Creating video capture canvas
13:03:12 Saving created context to static contexts list
13:03:12 Starting initialization of: Integrated Camera webcam
13:03:12       Found media type: [email protected] YUY2
13:03:13 SYM Symbol-SearchPath: '.', symOptions: 530, UserName: 'p447'
13:03:13 SYM 00007FFC86FEBF1E (RsDMFT64): (filename not available): DllUnregisterServer
13:03:13 SYM 00007FFC86F40E1B (RsDMFT64): (filename not available): (function-name not available)
13:03:13 SYM 00007FFC86F49953 (RsDMFT64): (filename not available): (function-name not available)
13:03:13 SYM 00007FFCCAC686CD (RTWorkQ): (filename not available): RtwqAllocateSerialWorkQueue
13:03:13 SYM 00007FFCD3312260 (ntdll): (filename not available): TpAllocPool
13:03:13 SYM 00007FFCD33031AA (ntdll): (filename not available): TpReleaseCleanupGroupMembers
13:03:13 SYM 00007FFCD16C74B4 (KERNEL32): (filename not available): BaseThreadInitThunk
13:03:13 SYM 00007FFCD33026A1 (ntdll): (filename not available): RtlUserThreadStart
13:03:13 UNEXPECTED ERROR. See log output for more info.
 Code: 0xC0000005.
 Flags: 0.
 Address: 0x00007FFC86FEBF1E.


I tried to upload Screenshots, but this Splitcam forum seems to have technical troubles:
There was a problem and your attachments could not be uploaded
Unable to create a new attachment directory.



Re: Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera

Reply #1
@SPLITCAM SUPPORT is there any Chance to debug this?

Re: Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera

Reply #2
The most possible cause of the problem is that the embedded web camera when queried is reporting that it supports resolution 640x360 in YUY format, but when we try to initialize the camera with this format, it crashes. I don't know what we can do about it. The web camera just doesn't behave correctly.
Toto,
SplitCam development and support team.

Re: Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera

Reply #3
Thanks @Anatoly Smelkov for the hint. Will try to check this with other Software. Any chance to "blacklist" this resolution/format in splitcam as a workaround?

Re: Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera

Reply #4
Did some more tests with different drivers without luck.

When I started this Forum-Thread last week I started with Realtek 10.0.220.20219, Device-Manager Driver-Date: 03.12.2021 from Lenovo Website.

Now I updated to the newest one from Lenovo-Website, it is Realtek 10.0.22000.20255, Device-Manager Driver-Date: 14.09.2022 ... behaviour didn't change, means:

  • Splitcam Crashes when a Media Layer loads which has an embedded Web Camera or when adding a "Web Camera" to a blank Media Layer
  • When SplitCam is installed (but not running!) Microsoft Edge Browser based WebConferencing shows only "black" when selecting the Realtek Camera.
  • Windows 10 App "Camera" shows "black" for some seconds, Camera-LED indicating Camera is used turns on. then Camera App closes
  • After Uninstalling SplitCam both the Win10 App "Camera" as well as Microsoft Edge Web Browser Based Webconferencing works fine
  • I even selected the [email protected] Format in the Win10 Camera App, it works!

Next I updated to the newest one from Microsoft Update Catalog https://www.catalog.update.microsoft.com/ searching for "usb\vid_174f&pid_1812". It is Realtek 10.0.22000.20261, Device-Manager Driver-Date: 07.11.2022 ... behaviour only slightly changes, means:

  • Functional no difference. Splitcam crashes, Windows 10 Camera App shows blank screen / Camera LED turns on and app closes. Browser Based WebConferencing shows only Black.
  • But in Detail now the Splitcam.log looks a bit different. Not it shows another media type: [email protected] YUY2 (before it was media type: [email protected] YUY2)


Here the Splitcam.log:
Code: [Select]
09:07:25 SplitCam starting: v10.6.36 x64
09:07:25 CPUID: AMD64 Family 25 Model 80 Stepping 0, AuthenticAMD
09:07:25 Processor: AMD Ryzen 3 PRO 5475U with Radeon Graphics
09:07:25 OS: Microsoft Windows 10 Enterprise 10.0.19044 64-Bit
...
09:08:28 Enumerating audio inputs
09:08:28   0: Mikrofonarray (Realtek High Definition Audio) {@device:cm:{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave:{047136A1-8975-428D-B18B-2A256ED8E388}}
09:08:30 Creating dialog class ui::CDlgAddCamera, "Add Camera" at (640, 324) of size 640x392
09:08:30 Looking for available video capture devices
09:08:30 Found 2 video capture devices
09:08:30 Updating list of available video capture devices
09:08:30 Enumerating webcams
09:08:30   Integrated Camera: {\\?\usb#vid_174f&pid_1812&mi_00#8&37760979&0&0000#{e5323777-f976-4f5b-9b55-b94699c46e44}\global}
09:08:31 Creating video capture sources
09:08:31 Creating video capture renderers
09:08:31 Creating video capture canvas
09:08:31 Saving created context to static contexts list
09:08:31 Starting initialization of: Integrated Camera webcam
09:08:31       Found media type: [email protected] YUY2
09:08:32 SYM Symbol-SearchPath: '.', symOptions: 530, UserName: 'p130'
09:08:32 SYM 00007FF97F94055E (RsDMFT64): (filename not available): DllUnregisterServer
09:08:32 SYM 00007FF97F88262A (RsDMFT64): (filename not available): (function-name not available)
09:08:32 SYM 00007FF97F88AAC7 (RsDMFT64): (filename not available): (function-name not available)
09:08:32 SYM 00007FF9BFD686CD (RTWorkQ): (filename not available): RtwqAllocateSerialWorkQueue
09:08:32 SYM 00007FF9C87F2260 (ntdll): (filename not available): TpAllocPool
09:08:32 SYM 00007FF9C87E31AA (ntdll): (filename not available): TpReleaseCleanupGroupMembers
09:08:32 SYM 00007FF9C84374B4 (KERNEL32): (filename not available): BaseThreadInitThunk
09:08:32 SYM 00007FF9C87E26A1 (ntdll): (filename not available): RtlUserThreadStart
09:08:32 UNEXPECTED ERROR. See log output for more info.
 Code: 0xC0000005.
 Flags: 0.
 Address: 0x00007FF97F94055E.


So, I found no evidence that other Apps like browser Based Videoconferencing (Jitsi, Cisco WebEx) don't work with this Realtek Camera when Splitcam is NOT installed. They show black Screen only if Splitcam is installed.

Splitcam crashes with several drivers tried, even the newest one from November 2022.
Using the WebCam without installed Splitcam works, for example in the Win10 Built-In Camera App, even when using the Camera in
[email protected] Format ... so I cannot confirm there is a general driver Problem with this mode.

Re: Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera

Reply #5
Test with OBS Studio

I installed OBS Studio to test how this behaves with this Realtek WebCam.

  • OBS Studio works fine with the Realtek WebCam as long as SplitCam is not installed.
  • After Installing SplitCam OBS Studio crashes in RsDMFT64.dll on Start

Re: Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera

Reply #6
Is it possible to connect to this problematic Lenovo computer via TeamViewer or AnyDesk to take a look at the issue myself? Please contact me on Telegram by @smelkov.

Thank you!
Toto,
SplitCam development and support team.

Re: Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera

Reply #7
Sure, I will setup the Machine with Lenovo PreLoad-Factory-Image and will connect it to the Internet for you tomorrow.

Just one addition: I got the tip to try https://kvycambgr.com/ as a splitting driver. And I tried it out, KVYcamBgr does NOT Crash, it works. So even when Splitcam is installed other apps like Edge-Browser, Microsoft camera App or OBS Studio which crashed before now can access the Integrated Realtek Webcam via the KVYCamBgr Splitter Driver. Even Splitcam can now access the camera by KVYCamBrg ... so thats a Workaround, but I like to avoid this because Users would have to setup this software and it makes things more complicated to use.

Re: Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera

Reply #8
sure using third party apps is not the best approach. i will wait for your message tomorrow to agree on a time to meet online. it is best of you could write to me in Telegram directly so i don't miss your messages.
Toto,
SplitCam development and support team.

Re: Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera

Reply #9
Solution: Do NOT "Disable Media foundation Frame Server"

I now finally found out what causes the Problem. Since Mai 2022 / SplitCam Version 10.5.80 there is a new Default-Option in Splitcam "Disable Media Foundation Frame Server". It is checked by Default during interactive Installation and cannot be controlled in Silent MSI Installation.

So by default SplitCam sets following two Registry Keys/Values:

Code: [Select]
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Media Foundation\Platform
    EnableFrameServerMode    REG_DWORD    0x0
 
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Media Foundation\Platform
    EnableFrameServerMode    REG_DWORD    0x0

  • This Realtek WebCam in Lenovo L15 Gen 3 (AMD) Notebooks does not work any more if EnableFrameServerMode=0 is set.
  • This behaviour can be reproduced even if SplitCam is not installed. Just set EnableFrameServerMode=0 and the WebCam stops working.

Solution:
  • Remove those two Registry Values => WebCam works again

Problem with MSI Silent-Installation:
  • This DISABLE_FRAME_SERVER Property cannot be controlled from Commandline
  • The problem is that there is a CustomAction "CustomCheckA_SetProperty_CHECKBOX1" which hardcoded sets this DISABLE_FRAME_SERVER to Value 1 during MSI Setup, regardless if CmdLine-Argument DISABLE_FRAME_SERVER=0 is passed. So it gets overwritten by this CustomAction.
  • One could think, that just removing those two registry Values scripted or manually would do the trick. But when starting SplitCam the Microsoft Installer checks the missing registry-Values and does a quick repair-install which leads to reappearing registry-keys on first SplitCam-Start after deleting them.
  • Please fix this! We need to set DISABLE_FRAME_SERVER=0 in Silent MSI Setup

Re: Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera

Reply #10
Please download an updated SplitCam v10.6.39: https://splitcam.com/win-download/update/10.6.39_x64.msi

The setup now supports setting the following parameters on command line for unattended setup:

- FRAMESERVER=1
Don't disable Windows Media Foundation Frame Server Mode during installation

- NOUPDATE=1
Disable automatic check for program updates

- NOABOUT=1
Don't automatically display About dialog on the first run after program update

So to run the setup in fully unattended mode without user interface, without disabling WMF Frame Server, without checking for future program updates, without displaying the About dialog on first run after update, and without automatically launching SplitCam after installation, use the following command:

10.6.39_x64.msi /quiet FRAMESERVER=1 NOUPDATE=1 NOABOUT=1
Toto,
SplitCam development and support team.

Re: Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera

Reply #11
Thanks a lot, tested - works like Charm!

Re: Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera

Reply #12
Summary / affected Camera Driver

So just to sum up:
  • If you are using a Realtek WebCam you probably have to install SplitCam with DESELECTING the Option "Disable Media Foundation Frame Server" or use MSI-CommandLine Argument "FRAMESERVER=1"
  • To check if your device is in correct / working state check if Value "EnableFrameServerMode=0" exists in "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Media Foundation\Platform" and/or "HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Media Foundation\Platform". If it exists you have to delete this Value.
  • This Realtek WebCam is used in various Lenovo, Dell etc... Notebooks. Windows Device Manager shows it as "Integrated Camera".
  • To check if it is the Realtek Driver klick on the Properties Tab of the Device "Integrated Camera" in Device Manager and check the Vendor. If it is Realtek you are probably affected.
  • Another good indicator would be that the File "C:\Windows\System32\RsDMFT64.dll" is present. This is the Realtek Driver of this affected Package.
  • I tested several Versions, starting with 10.0.19041.20188 up to the lastest available 10.0.22000.20261 (November 2022), they are all affected.
  • I opened a Support-Ticket at Lenovo to request that this driver gets fixed, but not sure this will be done in the near future.

Re: Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera

Reply #13
Just a note. I've tested SlitCam on another Lenovo ThinkPad notebook which also has only one Integrated Camera and no other cameras connected. SplitCam works just fine on this machine and no issues whatsoever were found. So having Lenovo ThinkPad computer doesn't automatically mean that you will have problems with Integrated Camera. I guess you have to test SplitCam on your computer with default installation options and only after that if problems appear with the integrated camera you should play with setup parameters and registry changes.

Also note that unchecking Disable Windows Media Foundation Frame Server option during installation might prevent you from using SplitCam and other virtual cameras in more than one application. In that case you may have to disable Integrated Camera completely in Windows Device Manager and use some other external web camera instead.
Toto,
SplitCam development and support team.

Re: Splitcam crash UNEXPECTED ERROR, Lenovo ThinkPad l15 Gen 3, integrated Camera

Reply #14
As far as I know Lenovo currently uses different Webcam-Vendors even for the same Models. Those are e.g. Realtek, Sonix, Sunplus.