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.

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

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.

If you are a developer, run the following command to see the file structure: ffmpeg -i 5fbfa28f9c45cb25769e3_source.mp4 4. Troubleshooting