To achieve the "Best" results, the following non-default parameters were utilized to maximize coding efficiency:
Run the installer. Ensure you check the box labeled "Enable Hardware Acceleration (DXVA2/D3D11)" during setup. This is the magic switch. If you skip it, you are just using software mode, which defeats the purpose of "best performance." userhevc best
The "Best" configuration demonstrated an average bitrate reduction of 18.4% compared to the "Medium" (default) preset while maintaining identical PSNR (Peak Signal-to-Noise Ratio) levels. To achieve the "Best" results, the following non-default