Instant 4k Plugin After Effects [better]

One evening he visited his parents and watched old home videos. He loaded one of his mother dancing in the kitchen—blurred steps, the lens fogged with movement—and hit Render. The result was uncanny: her laugh caught in crisp motion, the wallpaper’s pattern resolved into a familiar floral he’d not noticed since childhood. He caught his mother’s eye and she smiled, then turned to him and said, “It’s like I remember it.”

If you don't have the paid Maxon/Red Giant suite, Adobe After Effects includes a built-in native alternative called Detail-Preserving Upscale instant 4k plugin after effects