Windows NVENC patch for 616.92 doesn't match official DCH DLL (offsets fail on clean install)

[Stefan2512]

Tested driver: 616.92 DCH (GeForce, desktop, RTX 3070, Windows).

Applied the byte-verification check from win/win10_x64/616.92/nvencodeapi64.1337 and nvencodeapi.1337 (verifying each offset:old->new entry against the live DLL before writing anything, rather than patching blind).

Result: 0/7 offsets match in nvencodeapi64.dll, and the x86 patch for nvencodeapi.dll also fails to match.

To rule out local corruption or leftover files, I verified:

1. Clean reinstall of the official installer (616.92-desktop-win10-win11-64bit-international-nsd-dch-whql.exe), no GeForce Experience, custom install.
2. SHA256 of the live C:\Windows\System32\nvencodeapi64.dll: 06a9f8e8dfcc64c71f00735dd0063e8a69ea4fc1f2ca7b1469ca47bdaf12f00e
3. SHA256 of Display.Driver\nvencodeapi64.dll extracted directly from that same official installer package: identical (06a9f8e8dfcc64c71f00735dd0063e8a69ea4fc1f2ca7b1469ca47bdaf12f00e).

So the installed file is byte-for-byte identical to what NVIDIA ships in the official installer - this isn't a corrupted or modified local file. The published patch offsets for 616.92 in this repo just don't correspond to this build.

For context, I hit the exact same 0/7 result on driver 596.36 first (added in #1064 / #1066) before trying 616.92, so this may not be isolated to a single version.

Happy to provide the extracted DLL or more details if it helps find the correct offsets.

[Stefan2512]

nvencodeapi64-616.92.zip
This zip has my dll file archived in zip.

[Jaybonaut]

Should we avoid this one then or does it still work as a hacked driver?

[ramhaidar]

@Stefan2512 can you provide the link for the driver?

I tried downloading from https://www.nvidia.com/en-us/drivers/details/278453/ and the name of the driver is
616.92-desktop-win10-win11-64bit-international-dch-whql.exe
and not
616.92-desktop-win10-win11-64bit-international-nsd-dch-whql.exe

I think i created the patch for 616.92-desktop-win10-win11-64bit-international-dch-whql.exe and not 616.92-desktop-win10-win11-64bit-international-nsd-dch-whql.exe back then

Edit: found it, you actually download from https://www.nvidia.com/en-us/drivers/details/278455/ the Studio Driver version, the patch i created back then was from Game Ready Driver

@Stefan2512 how did you patch the driver? manually? or using powershell script? or using the Win_1337_Apply_Patch tool (the Deltafox79 one or the ramhaidar fork one?)