5f8902af00328cd3e2fb1_source.mp4

If you found this in a specific community (like a Discord for digital painters or a subreddit for game dev), it likely refers to a for a tutorial or a high-quality animation loop.

Niche creators using automated hosting services. 5f8902af00328cd3e2fb1_source.mp4

Technical videos for 3D modeling or game development (like those found on ArtStation or Gumroad). If you found this in a specific community

Artists often upload process videos or "speedpaints" where the source file is named with a hash like this. this naming convention is typical for:

While the specific alphanumeric string doesn't point to one single famous "piece" in general public databases, this naming convention is typical for: