0h147u4bt2fstxh24b4p0_source-erlurz9j.mp4

The system creates different versions of the video for various internet speeds. The "source" tag in your filename suggests this is the original high-quality version before it was compressed for mobile viewing.

These specific filenames often appear when a user downloads a video using a browser extension or a third-party downloader . Because the original uploader didn't give the file a "real" name (like "Vacation.mp4"), your computer saves it using the cryptic internal ID assigned by the server. 0h147u4bt2fstxh24b4p0_source-erlURZ9j.mp4

If you are having trouble viewing the file, tools like VLC Media Player or Windows Media Player are standard for opening MP4 containers. The system creates different versions of the video