How should we understand digital video? It is basically recordings or live feed of footage that is captured with the use of photosensitive sensors mounted on a digital camera or scanner. If that sounds complicated, it actually kind of is. The engineering and technology that goes into the making of a modern digital camera is the result of years and years of research and development. Digital video has seen many applications, from allowing the creation of multifaceted machines like camera phones, to online audio visual entertainment, to cheap security cameras.