71927-_1668309908.mp4 -

Look for the or "Encoder" tags. This will tell you if it was made by an iPhone, an Android, or a specific editing software.

Before opening, run the file through VirusTotal.com . 71927-_1668309908.mp4

The file might be a "Mute MP4" (often used for GIFs) or uses an AC3 audio track. Try VLC. Look for the or "Encoder" tags