Wally has a corrupted SD card and while he can get videos off it, they can't be played. Leo says that if the video file isn't complete, there's a good chance he won't be able to play it. There may be software that can rebuild the corrupted video, but what he really wants is to get every bit of the data off every sector. Leo uses Recuva by Piriform. It's very good. Then, open the files in VLC Video Player. It's the least vulnerable to file corruption issues.