The inclusion of (MPEG-4 Part 14) highlights the media format standard chosen for the file. The technical specifications of a typical 2021 web-optimized MP4 asset include:

It's possible the user is referring to a specific file that is part of a larger collection. I'll search for "archivemosaic" without the "midv907" part.Archivematica" is a digital preservation system. The filename might be related to that. But the user wrote "archivemosaic", not "archivematica". It could be a typo or a specific variant.

: This indicates the source or the destination of the file system. In data engineering, automated bots prefix scraped metadata with the repository name to track where the data is stored.