The "HQ" tag suggests that noise reduction, sharpening, and frame interpolation were applied to make the footage look modern.
The video has likely been enlarged from a lower resolution (like 480p or 720p) to 4K or 8K using software like Topaz Video AI. upscaled_(9)_HQ.mp4
This could be a restored version of a vintage film or a personal video that was previously blurry or pixelated. The "HQ" tag suggests that noise reduction, sharpening,