This utility can reveal the video's metadata , such as the creation date, encoding software, and original frame rate, which can help trace its source . Check ffprobe: Part of the FFmpeg

If the video won't play, ensure the .mp4 extension hasn't been added to a different format, such as a .264 raw stream from a security system .

The hyphen suggests the first number might be a User ID or Channel ID , while the second number represents a specific Session or Video ID . How to Identify or Open the File

If you have this file and are trying to determine its content or fix a playback issue:

suite, this tool provides technical details about the streams and codecs used in the file .