If you are looking for a way to this specific file, here are the most common sources for that naming format:

Because this is a private file name rather than a public viral video or a standard educational resource, I cannot see the actual video content. To help me identify it, could you describe what happens in the video?

Based on the naming convention, the video was recorded or saved on .

: This is the exact format Telegram uses when you download a video to your local storage.

: Some Android skins use this year-month-day-time format.