Unexpected interruption in the power supply when playing a video.Repeatedly deleting video files can also cause damage.OS crash contributes to video file corruption.Unprofessional video converter can sometimes damage or corrupt videos, as well as unsuccessful video conversion.Virus attack that can damage files on your system and other files, including videos.There are times when MP4, AVI, MOV, or M4V videos are not playable, which is most likely due to the corruption of video files when downloading.
