Ok, getting serious now. The only thing I liked in that video was your work with sony vegas. Really liked the effect.
As for the program, very begginer and kinda useless. I suggest the following:
Read the binary of the selected files. Create custom encryption algo. Append it to current binary value. That will be more secure. I mean hiding a file is really useless. Unless you are real dumb, you can see those files easily.
And for camera, I don't know what it was doing in this program. Put a timer. Set interval to 100. In, timer print screen every time and you had that effect. Not hard really, but the point is that its useless. If you really want to monitor the folder / file, use FileSystemWatcher class. I believe that anti-viruses use it for monitoring critical folders. You can make use of it to monitor your secured files.
Don't take my post offensively. I just posted this so you can code better and come up with better ideas/releases next time.
Cheers