The identifier does not appear to correspond to a widely known public feature film, viral video, or standard digital asset.
Could you provide more on where you encountered this file or describe any visuals from the video? h397556.mp4
If this filename was found on a specific device or internal network, it is likely an (such as a security recording, a technical demonstration, or a clip from a digital asset management system) rather than a commercially released "feature." The identifier does not appear to correspond to
: It is listed as a reference drawing number (H397556) for the fabrication of cable assemblies used in communication equipment. : The string serves as a part number
: The string serves as a part number (H397556-1) for various electronic and electrical components cataloged by Part Target .
Based on technical databases and catalog listings, the alphanumeric string is primarily associated with industrial and military hardware components: