There are several methods for upscaling a 1080p video to 4K resolution without sacrificing quality. One way is to use software that can upgrade the resolution of your video without losing its quality. Many software programs can upgrade HD to 4K without losing the quality of the video. Another way is to use a video converter that supports 4K output, such as Video Converter Ultimate or MiniTool Video Converter. These converters allow you to batch videos and upscale them at once, while maintaining the original quality of the video. Additionally, you can use online tools such as VideoProc or VideoToConvert to upscale your video to 4K. These tools are easy to use and can be accessed from anywhere.
It's important to note that while upscaling a video to 4K can improve its resolution, it's not the same as having native 4K footage. The quality of the upscaled video will still depend on the original quality of the 1080p video. Therefore, it's important to ensure that the original video is of high quality to begin with.
In summary, there are several methods for upscaling a 1080p video to 4K resolution without sacrificing quality. These include using software such as Video Converter Ultimate or MiniTool Video Converter, or using online tools such as VideoProc or VideoToConvert. However, it's important to remember that upscaling a video is not the same as having native 4K footage, and the quality of the upscaled video will still depend on the original quality of the video.