Lost video on Q10

Hi
I recorded a video the other day of my sons school assembly (about ten minutes long) and it now doesn't show as being on the phone. I am certain that I haven't deleted it but cannot find it anywhere. Any ideas where it could be or any reason why it can't be found. I am now wondering whether it is worth using the video camera in the future or better to use my iPhone instead.

Have you checked the pictures folder?
Videos taken with the blackberry camera always save in the pictures folder. Go check it.