Files with this specific alphanumeric structure are almost always cached data from the Meta (Facebook/Instagram) ecosystem.
It does contain the actual video content (the visual frames); it tells the player how to read the segments that follow. 📂 Usage & Context
📍 Because this filename is a unique hash generated for a specific session or upload, the actual visual content it refers to cannot be identified by the name alone without access to the private server it originated from.