If this video is part of a specific course or a tool you are using, please provide the where you found it, and I can help identify the relevant documentation.
If you are working with a developer or a specific lab, this is likely an internal identifier for a raw video file used for training or testing a custom model. nagyszandi_Zappp_VID-84.mp4
The prefix and format are common for media downloaded or cached from social platforms or video editing apps (like Zappp.ph or similar mobile applications). If this video is part of a specific