When you "Inspect Element" on a site like Instagram or Facebook to find a video's direct source, the resulting filename is often a long hash like this.
The "source" prefix typically indicates that this is the original, high-quality version of the upload before it was compressed into different resolutions (like 720p or 480p) for streaming. The "NI" could refer to a specific server node, a "No Index" flag, or a proprietary internal tag. 0h076o24gg442zcf1ayb0_sourceNI.mp4
This alphanumeric string is almost certainly a hash or a unique content ID. Platforms like Twitch, YouTube, or Facebook use these to prevent file overwrites and to manage massive databases where simple titles would lead to collisions. When you "Inspect Element" on a site like