Be highly cautious when downloading this file from the internet:
🛑 Only download this file if you recorded it yourself or trust the sender completely. 🛠️ How to Fix and Open the File
If you trust the file and have already downloaded it, follow these steps to make it playable: in your operating system settings. Rename the file to remove the confusion. Try changing the end of the name to just .mp4 . If it fails to play, rename the end to just .mkv .