To help identify the "piece" within that video, could you describe: in the video?
Because this is a generic name used for millions of private files sent through the app, it does not refer to a specific, unique "piece" of music, art, or media available in a public database. The "WA" stands for WhatsApp, and "0018" indicates it was the 18th video file handled by the app on that specific date. VID-20190603-WA0018
What is the (a person performing, a meme, a landscape)? To help identify the "piece" within that video,