VLC Media Player (highly recommended for raw server files as it can handle minor corruption).

The filename is a specific content identifier (CID) or alphanumeric string typically generated by automated media servers, content delivery networks (CDNs), or platforms like Discord , Twitter (X) , or Reddit .

The suffix _source indicates that this is the original, high-quality version of the file before the platform compressed it for different resolutions (like 360p or 720p).

You can often find the video's origin by right-clicking the file, selecting Properties (Windows) or Get Info (Mac), and looking at the "Origin" or "Where from" fields.

Windows Media Player, Movies & TV, or QuickTime (Mac).

This is a raw video file in the format. The long string of characters is usually a unique ID assigned by a server when a user uploads a video.

Since it is an .mp4 file, it is one of the most compatible video formats in the world. You can open it using: