Blu-ray movie is wonderful, but there are some shark in Blu-ray sea: Blu-ray protection and frail material. User will miss a Blu-ray due to frequent playback or Blu-ray protection. So create ISO image file from Blu-ray disc is a wisdom way.
DVD disc is the main movie entertainment, however to most people, the heavy DVD player drive, slow running, frail DVD plastic material are all the troubles, create a ISO image file from DVD disc is a wisdom choose.