Can't view a video on my iPhone?

So I went to a concert last night and took a video of a song which lasted about 3 minutes ish, anyways my phone had 91% battery and it still said I have memory left over so taking the video was fine. I tried to watch it today but it's came up white and it says 'Mov' but when I press the play button it says 'The operation could not be completed' so I can't watch my video, even though other videos work etc, please help!

.mov is Apple's Quick Time video file format. Try loading on your PC or other device to see if it will play there. If not, it's the file.