If you have this file on your device and are unable to open it, you can use these methods:
The .mp4 extension indicates it is a video file, which can include both audio and video tracks.
Use VLC Media Player, which is highly compatible with various codecs and platforms including Windows, Mac, and Linux.
Be cautious when opening files with random numeric names from unknown sources, as MP4 files can occasionally be used to hide malicious code within metadata.
The filename follows the standard naming convention used by Telegram for media files stored in its cache or downloaded from its servers. Context of the File
Files with these long numeric names are usually temporary or system-generated identifiers rather than descriptive titles given by a creator. How to View the Piece