Where can I find this video?

No video, just a CG image set called "Monster Eater Pt.1" by Jared999d for Affect3D.

Official
https://affect3dstore.com/monster-eater-pt-1.html

Image Reference + Full Set
https://www.8muses.com/picture/289049/affect3d-comics/jared999d/monster-eater/issue-1/face-version/44
https://www.8muses.com/album/affect3d-comics/jared999d/monster-eater/issue-1/face-version

No video, just a CG image set called "Monster Eater Pt.1" by Jared999d for Affect3D.

Official
https://affect3dstore.com/monster-eater-pt-1.html

Image Reference + Full Set
https://www.8muses.com/picture/289049/affect3d-comics/jared999d/monster-eater/issue-1/face-version/44
https://www.8muses.com/album/affect3d-comics/jared999d/monster-eater/issue-1/face-version

here's another link containing this image

http://qwexx.com/jared999d-monster-eater-ch-1-322140/

I think it's part of a comic.
http://shentai.org/jared999d-monster-eater-part-1/