Nvidia VFX Filters cannot be loaded

[Ancillius]

Operating System Info

Windows 10

Other OS

No response

OBS Studio Version

31.0.1

OBS Studio Version (Other)

No response

OBS Studio Log URL

https://obsproject.com/logs/peeUpdhn6kxm7mjA

OBS Studio Crash Log URL

No response

Expected Behavior

Nvidia VFX Filters show up.

Current Behavior

They dont. Log confirmes:

12:23:02.992: Failed to get nvARPose.dll version info size
12:23:03.002: [NVIDIA Audio Effects:] version: 1.6.1.2
12:23:15.328: [NVIDIA Audio Effects:] enabled
12:23:15.329: [NVIDIA VIDEO FX]: NVIDIA VIDEO FX version: 0.7.6.0
12:23:15.340: [NVIDIA VIDEO FX]: FX disabled, redistributable not found or could not be loaded.

Steps to Reproduce

1. Install Nvidia SFX SDK https://international.download.nvidia.com/Windows/broadcast/sdk/VFX/nvidia_video_effects_sdk_installer_v0.7.6_ampere.exe
2. Start OBS
3. Check Filters

Anything else we should know?

Steps looked up:

Used Driver 32.0.15.6636 -> issue exists
Updated to Driver Version: 32.0.15.7216 -> issue still exists

Looked up used cudart dlls:
NVIDIA Broadcast.exe 13836 cudart64_12.dll 6.14.11.12010 C:\ProgramData\NVIDIA\NGX\models\nvbcast\versions\2049\files\170_E658703\cudart64_12.dll

Looked up installed nvidia SDKs:

Info: Audio FX Filers show up (also shown in log)

@Penwywern in the OBS DC has a hunch that it is related to: "because obs tries to load three things, the third of which is cudart64_110.dll, i.e. something from cuda version 11." (DC link: https://discord.com/channels/348973006581923840/374636015396192257/1335220036205281352 )

[Ancillius]

Add Info:

Full quote from the DC ( I accidentally shortened it:)

so I have a hunch because obs tries to load three things, the third of which is cudart64_110.dll, i.e. something from cuda version 11.
that folder, on the other hand, shows cudart64_12.dll, i.e. from cuda version 12.
My hunch is that the sdk updated the version of CUDA it uses and that causes to break obs loading it.

And used SDK Version/Files are:

[pkviet]

yes the sdk updated the cudart dlls;
it shouldn't try to load previous versions.
I didn't have that issue with the test versions of the sdk.
Gonna investigate.
Thanks for the report

[pkviet]

Fixed here:
#11814

[pkviet]

Test builds:
https://github.com/obsproject/obs-studio/actions/runs/13090458553/artifacts/2521514958

@Ancillius
Please test and report.

[pkviet]

updated the artefact link since I modified a bit the PR

[Ancillius]

Ok. I have copied the files over the installed version...

Nvidia Filters show up now:

https://obsproject.com/tools/analyzer?log_url=https%3A%2F%2Fobsproject.com%2Flogs%2F2kdwGBzm3QiLBa9E

but twitch events dock and chat dock are gone missing now... -.-

[pkviet]

Ok the bug is fixed.
The docks bug is something unrelated.

[Ancillius]

Yes, whatever it was.. reverting to the current stable and reconnecting the account fixed the twitch issue.. also (didnt even notice) the given version was english instead of german and also hat a .. idk polish? text for the "statbar" on the bottom)...

[pkviet]

Sidenote, when one wants to test the zips, it's enough to unzip in an arbitrary folder and launch obs.exe from the bin subfolder.
In that way, the install in Program Files is untouched.

[Ancillius]

Yeah would have been smarter I guess :)

[pkviet]

i'm closing the issue ; feel free to reopen, if something else comes up related to this.

[pkviet]

reopened; it'll be closed automatically when the linked PR is merged.

[julian-becker]

Test builds: https://github.com/obsproject/obs-studio/actions/runs/13090458553/artifacts/2521514958

@Ancillius Please test and report.

In my case, this fixes the issue and I can use the NVIDIA Video FX again ❤️🙏