The _source suffix indicates that this is the original, high-quality master file before any compression or transcoding for different devices (like 720p or 1080p versions) has occurred.
The alphanumeric string 0h9gq5k9jlj6zcmv4q8pe serves as a unique asset ID. This ensures that even if multiple files have the same descriptive title, the system can distinguish between them. 0h9gq5k9jlj6zcmv4q8pe_source.mp4
The use of underscores ( _ ) instead of spaces is a best practice for cross-platform compatibility, preventing errors when files are handled by different operating systems or web servers. Why This Convention is Used The _source suffix indicates that this is the