Here are a few example images of VideoCrypt encrypted TV program recorded with frame grabbers as well as images that I have decscrambled using image-proccessing techniques.
For instance
is an encrypted image as you can get it with a satellite dish without a Videocrypt decoder. Using image processing techniques, I created from the above input image the image
using the antisky.c software that implements FFT-based crosscorrelation and an edge detector with the first image as input.
The image
is almost the same image (a few fractions of a second recorded earlier) but broadcasted in clear.
More technical information is available in the antisky README file.