You can easily upscale low resolution videos, images and even animated GIFs for free using the Waifu2x graphical interface by Aaron Feng. Unlike regular video scaling, Waifu2x uses Artificial Intelligence to upscale and enhance videos, sometimes with amazing results.

Links to the free software you will need:
https://github.com/AaronFeng753/Waifu...
https://www.7zip.org/