There are several techniques you can use to enhance the resolution of your HD footage and make it look like 4K footage. One approach is to adjust the video playback settings on your video player. Many modern video players have options to enhance image quality by applying sharpening filters or upscaling algorithms. Another option is to use video upscaling software, which can take your low-resolution video and convert it to a higher resolution, such as 4K. Some of these tools use artificial intelligence (AI) algorithms to enhance the image quality and remove noise and grain from the footage. Other tools use traditional upscaling methods to increase the resolution of the video. It's also possible to use video editing software, such as Adobe Premiere Pro, to upscale your HD footage to 4K. This can be done by resizing the footage and creating four pixels out of each 1080p pixel. Additionally, you can use GPU performance to dynamically adjust for better compatibility. It's worth noting that while these techniques can improve the resolution of your HD footage, it may not be possible to achieve the same level of detail and clarity as true 4K footage.