Shuffling lines was the scrambling algorithm used in nagravision a while back... https://www.youtube.com/watch?v=gFAinn6sddQ https://www.youtube.com/watch?v=gF

Shuffling lines was the scrambling algorithm used in nagravision a while back... https://www.youtube.com/watch?v=gFAinn6sddQ https://www.youtube.com/watch?v=gFAinn6sddQ there was a software that could descramble the video using a similar technique