![]() ![]() We calculated the PSNR between the high- and medium-quality videos.To minimize performance fluctuations, we transcoded high-quality H.265 video to H.265, medium-quality, fully on-GPU.We encoded the raw UltraHD YUV420 sequence to 80-Mbps, high-quality, H.265 video stored on RAM.We calculated the peak signal-to-noise ratio (PSNR) between the high- and medium-quality videos.To minimize performance fluctuations, we transcoded the high-quality H.264 video to H.264, medium-quality, fully on-GPU.We encoded the raw FullHD YUV420 sequence to 50-Mbps, high-quality, H.264 video stored on RAM.To compare legacy and new presets, we conducted four transcoding experiments. ![]() NVIDIA is integrating the new preset architecture into the FFmpeg support for NVENC soon. legacy and new presets in 1080p and 2160p resolution with H.264 and H.265 codecs using the popular open source library FFmpeg. Mixing and matching results in 28 combinations for better control over the encoding process. Presets and tuning information parameters are orthogonal to each other. If you are using the 2-pass rate control mode, you can choose whether to run the 1st pass in quarter resolution.
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