Upscaled_(9)_hq.mp4 -

A YouTuber or editor may have upscaled b-roll footage to match the quality of a 4K project.

In online communities, these files are often shared as high-definition versions of old anime scenes, music videos, or cinematic trailers. Technical Specifications (Estimated) Format: MP4 (MPEG-4 Part 14). upscaled_(9)_HQ.mp4

This could be a restored version of a vintage film or a personal video that was previously blurry or pixelated. A YouTuber or editor may have upscaled b-roll