That is a very important question indeed.
I was told that, and I was told exactly the same thing in Libya, where I conducted this type of investigation. It was infuriating, as it was for the International Criminal Court, which was obviously looking into the rapes since it opened an investigation into Gaddafi.
It appears that some videos are still out there, but it is extremely difficult to recover them. The concern of people who received a video was to destroy it as soon as possible. That brings us back to the depravity of this weapon since people immediately destroy the videos. They are very much afraid they might fall into unobliging or unfriendly hands and be used against them.