0h4z378fufd3tp957ke00_source.mp4 -

This file is likely referenced in an API response or a manifest file (like .m3u8 or .mpd) used by a video player.

The 21-character alphanumeric string is likely a UUID or Hash used by a database to track the video’s metadata (e.g., upload date, owner, and permissions). 0h4z378fufd3tp957ke00_source.mp4

This represents the "Master" copy that should be preserved for future re-encoding. This file is likely referenced in an API

This naming convention is common in video-on-demand (VOD) pipelines where a unique hash is assigned to prevent filename collisions. Technical Breakdown or master version before transcoding)

Source File (indicates the original, uncompressed, or master version before transcoding)