87047.mp4

Open it with a media player like VLC Media Player to view the contents. If you can share:

Right-click the file and select "Properties" (Windows) or "Get Info" (Mac) to check the creation date, size, and original source. 87047.mp4

from a website, social media app, or cloud storage. A personal video recording from a digital camera. How to identify the content: Open it with a media player like VLC

Look at where the file is saved on your computer or phone to see which application created it (e.g., WhatsApp, a screen recorder, or a download folder). and original source. from a website

Because this is a generic numerical filename, it is likely one of the following: on your device.