If you found this file in a specific directory or cloud storage, the alphanumeric string is likely a .
Check if it belongs to a known machine learning dataset (like those on Hugging Face ) or a web-scraping project where files are named by their content hash.
Since it uses the .mp4 container, it is highly compatible with most modern software: Use the Movies & TV app or Windows Media Player. Mac: QuickTime Player supports MP4 natively.
The specific filename 5fbfa28f9c45cb25769e3_source.mp4 appears to be a hashed or system-generated name for a video source file, often associated with datasets, automated uploads, or media servers.
If you need to know exactly what is inside this specific file (resolution, frame rate, or original creation date), you can inspect its metadata:
The _source suffix usually indicates this is the original, high-quality version of a file before it was compressed or transcoded for streaming. Cannot download mp4 file - Adobe Community