It's possible to upscale a music video shot in the 80s with 480p quality to 4k resolution today through a process called video upscaling. This involves using algorithms to enhance the resolution of the original video by adding artificial detail. One popular approach to video upscaling is to use machine learning algorithms to analyze the low-resolution video and generate a high-resolution version based on patterns and features in the source material. This process can be effective at improving the overall clarity and sharpness of the video, but it may also introduce some artificial artifacts or distortions.
Another approach to upscaling a music video shot in the 80s is to use specialized hardware or software designed specifically for this purpose. For example, some video editing software packages include tools for upscaling video, while there are also standalone upscaling devices available that can be used to enhance the resolution of video content in real-time. These solutions often use a combination of techniques, such as interpolation, to generate a high-resolution version of the video that is as faithful as possible to the original. However, it's important to keep in mind that no upscaling method can truly restore the level of detail that was lost when the video was originally recorded at a lower resolution. In general, the results of video upscaling will be best when the original source material is of high quality and has been well-preserved.