Ninass-049.mp4

: This is almost certainly the first name of the subject or creator featured in the video.

If this file was found in a professional context, check the accompanying "README" file or metadata for "Creative Commons" licensing or usage rights. If it is part of a personal archive, it is standard practice to cross-reference the "SS" prefix with the folder name to confirm the specific project or year it belongs to. NinaSS-049.mp4

Given the syntax, the file is most likely one of the following: : This is almost certainly the first name