High Definition Blue Ray Video Camera Price What Is The Difference In Quality Between A High Definition DVD Recorder And A Blue Ray DVD RECORDER?

What is the difference in quality between a high definition DVD recorder and a Blue Ray DVD RECORDER? - high definition blue ray video camera price

If it takes up to 30 GB HD is not really necessary to burn video to burn a Blue Ray DVD, which has 25 gigabytes of memory instead of memory, is only 4.6 gigabytes compressed in the rule?
But most movies are recorded in a concert DVD of 4.6 yet? What makes the Blu-Ray and practice so special?