#5135 No CUDA detected. Check NVIDIA GPU/Drivers. See Help -> CUDA.

The error "No CUDA detected" means pyVideoTrans cannot find a compatible NVIDIA GPU or CUDA toolkit. This is a configuration issue with your GPU acceleration environment.

Causes and fixes:

1. No NVIDIA GPU: CUDA acceleration requires an NVIDIA graphics card. AMD/Intel GPUs are not supported. If you don't have an NVIDIA GPU, you must disable the "CUDA Acceleration" checkbox in the main interface. The software will then run using CPU (slower but functional).
2. Outdated or missing NVIDIA driver: Update your GPU driver to the latest version from NVIDIA's website.
3. CUDA toolkit not installed or version mismatch: You need CUDA 12.8 or later (software is built against 12.8, compatible with 12.8+ and 13.x). Download from NVIDIA and install. Also install cuDNN 9.11+.
4. Environment variables missing: After installing CUDA, ensure CUDA_PATH and PATH include CUDA's bin and lib directories. Restart the software.
5. Install in admin-restricted folder: The software should not be in C:\Program Files or C:\Windows. Your current path C:/Users/ahmet/Downloads/... is fine.

If you have verified all the above and still see the error, please check the logs/ folder in the software directory for detailed error logs (paste the last 30 lines).

Reference documentation:

• CUDA Acceleration Setup