5_6321168377595298097.mp4 <QUICK>

This specific numeric string is typical for files distributed through Telegram channels or chats.

If you have this file on your device and are unable to open it, you can use these methods: 5_6321168377595298097.mp4

The .mp4 extension indicates it is a video file, which can include both audio and video tracks. This specific numeric string is typical for files