Set up your DVD or VHS to pause on a still image or play the movie on repeat. If you use a still image, you can control the appearance of the hologram at all times. If you use a short movie, you can create a moving hologram that will give the illusion of three-dimensional life. But the hologram may "skip" when the movie rewinds or goes back to the beginning.
Clean the piece of glass with a lintless cloth so no streaks or dust are visible to break the illusion. For best results, use dry cleaning fluid so the glass displays virtually no reflection.
Project your TV screen at the glass or Plexiglass. For best results, keep the TV out of sight by laying it flat behind a shelf or similar object, with the screen facing the ceiling and the glass angled at 45 degrees.
Adjust the TV's brightness as low as possible and the contrast as high as possible without distorting the picture. This will enhance the three-dimensional effect of the hologram.
Turn on the movie and the TV and enjoy your hologram.