: Sites like Imgur or Streamable use alphanumeric strings to catalog millions of clips.

: If you have the file, you can calculate its MD5 hash . If the filename itself is the hash, searching for it on sites like VirusTotal or Google might show if it was part of a known data leak or public upload.

: If you found this link on a specific website, the context of that page (the discussion thread or the article it was attached to) is the only way to know what the video contains.

The identifier appears to be a specific filename or a cryptographic hash (likely MD5) typically associated with a video file stored on a server, content delivery network (CDN), or a local database.