#5170 No CUDA detected. Check NVIDIA GPU/Drivers. See Help -> CUDA.

The error "No CUDA detected" indicates pyVideoTrans cannot find a compatible NVIDIA GPU or CUDA environment. This can occur for three main reasons: no NVIDIA GPU present, outdated or missing NVIDIA driver, or improper CUDA/cuDNN installation.

To resolve, follow these steps:

1. Verify you have an NVIDIA GPU
   Open Task Manager → Performance tab. If you don't see a "GPU" labeled "NVIDIA", the system lacks a CUDA‑capable card. AMD / Intel GPUs are not supported.

2. Check driver and CUDA version
   Open Command Prompt (Win+R → cmd) and run:

   nvidia-smi

   • If the command fails or is not found → install NVIDIA drivers from nvidia.com/drivers.
   • If it runs, look at the CUDA Version line at the top. You need 12.8 or higher.
     Also run nvcc -V to confirm CUDA Toolkit is installed.

3. Install / update CUDA Toolkit 12.8+ and cuDNN 9.11+

   • Download CUDA 12.8 from developer.nvidia.com/cuda-toolkit.
   • Download cuDNN 9.11 for CUDA 12.x from developer.nvidia.com/cudnn.
   • After installation, ensure the following are added to the system PATH environment variable:
     C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v12.8\bin
C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v12.8\lib
     (and cuDNN’s bin as well, typically inside the CUDA folder).
4. Restart the computer and launch pyVideoTrans again. Under Advanced Options – General Settings, check that CUDA Acceleration is visible and enabled.

If the problem persists, please share the full output of both nvidia-smi and nvcc -V (from CMD), plus the latest log file from C:/Users/kurtar/Desktop/pyvideotrans/logs/. I can then pinpoint the exact missing component.

Please refer to the official documentation:

• Configuring CUDA Acceleration on Windows
• FAQ: GPU and CUDA errors