My fathers iPad nano is advising that there are some videos.
I seem unable to find them on his iPad.
You'll also find that your videos are in the camera roll with your still photos, sorted by the date and time they were taken.I couldn't find my videos on my iPad Pro iOS 10.3.1, even the ones I had just taken. Finally I found them under a Photos, Albums, Videos. Felt like a blithering idiot! Hope this helps.
Are they in the photos app as the member KAYLAESQ found in her post in this thread?I came across the same issue.