Disturbed or incomplete media download or transfer.There are several possible reasons and you will learn about them here:

There are many possible reasons and here you will learn about them: How to repair MP4 files in this case? Why do you receive this error message? What causes corruption in MP4 and MOV files? At the same time, you may get an error message that shows the file is broken and the player can’t read it. However, things become difficult if you get a corrupted MP4 file. To open an MP4 file, all you have to do is double-click your video, and it will open with your default video viewer. MP4 is a standardized file format for video nearly all video players support MP4. It is often used to store audio, subtitles, and still images. MP4 is one of the most common video file formats used for downloading and streaming videos from the internet. Repair MP4 Files on Mac  MP4 Video Gets Damaged, How to Repair It Replicate Video File to Gain Access Top 5.

Repair Corrupt MOV & MP4 Files with VLC Top 4.

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