Use the search bar on Archive.org and filter by "Mediatype: Movies" to find video files.
Archive.org searches for "Mahabharat 2013" largely return historical texts digitized around that time, including Nilakantha's commentary and Bengali translations. While users often seek the 2013 Star Plus television series, the full show is officially hosted on Disney+ Hotstar rather than the archive. Explore these digital resources at Archive.org Internet Archive
Will Mahabharat 2013 remain on Archive.org forever? Theoretically, yes. The Internet Archive is protected by the Brewster-Kahle foundation and mirrors data across continents. Even if Disney Star issues a DMCA takedown notice (which they historically have not aggressively pursued for this title globally), the "Lending Library" status often restores the data.