If your graphics card supports NVENC GPU acceleration, then, you are almost done to the final goal: to achieve the high-speed videos conversion. Now, all you need is a reliable video converter with NVENC acceleration supported. Although there are lots of video converters on the market claiming that they support NVENC H.264 and NVENC H.265 encoding, most of them are deceptive, or the converting speed is not that high. So, here, we sincerely recommend to you one practical and effective NVENC video converter: HD Video Converter Factory Pro. It embeds Nvidia NVENC acceleration technology, which can surely get the conversion speed to a higher level. Now, let’s follow the steps to go on the NVENC H.264, NVENC H.265 encoding process.