The phrase “sand this video” doesn’t have a widely recognized meaning in English. It’s possible that it could refer to a specific context or jargon within a particular community or industry. For example, it might relate to editing a video to make it smoother or to refine it, as “sanding” is a term used in woodworking to mean smoothing a surface.
If you have a specific video in mind or if this phrase is used in a particular context, please provide more details, and I can offer a more accurate explanation or interpretation!