Blu-ray, the Hi Def DVD


DVDs were originally designed for a 135 minute Standard Definition movie and the movie is only slightly compressed in standard definition video (480 x 640 pixels, 30 frames a second in NTSC). At this rate a conventional 4.7 gig DVD holds a full length movie and a few extras.

A conventional DVD cannot hold an entire Hi Def movie. A Hi Def movie would require 5 times the storage space! So the electronics industry started inventing the next generation DVD.

Two Formats: Blu-ray DVD and High-Definition DVD

They both use a new blue laser and the disc looks the same. The blue laser is a shorter wavelength than a red laser which is used in conventional DVDs. This shorter wavelength allows the burning of smaller pits and lands and allows the tracks to be closer together. Blu-ray has more capacity of 23 gigabytes compared to 15 gigs on a HD-DVD disc, but both can double their capacity by recording on two layers.

Developing The Blu-Ray Format

  • Sony
  • Panasonic (Matsushita)
  • Thomson (RCA and GE)
  • Pioneer
  • Sharp
  • Samsung
  • Dell
  • Hewlett-Packard
  • Philips

Developing The HD-DVD Format

  • Toshiba
  • NEC

The battle was been won by Blu-ray!  Blu-ray HD-DVD recorders first appeared in Japan in April 2003, and now they are ubiquitous. Those early recorders were designed for home recording only (not for playing pre-recorded HD movies). Now many Blu-ray recorders are downward compatible and play your current DVDs and make them look better. Of course all the DVD players we have now will be obsolete when and if Blu-ray Hi Def DVD players take over. But before you throw your DVD player out, remember what happened with HDTV in the U.S. It was supposed to be available in 1989, yet it was not finalized until 1996 and did not appear until 1998. It hasn’t made your TV set obsolete yet and it won’t for a long time.


Keep Reading...

OK Go One Moment Music Video

Amazing OK Go One Moment Music Video

The OK Go One Moment Music Video proves the importannce of planning and mathematics in extreme slow motion.

Read More
Go Pro Becomes a Broadcast ENG Camera

Make a GoPro Look Professional – Put it in a Betacam Camera Body

Go Pro Camera hidden inside an ENG broadcast camera.

Read More
Drone Case Settles: Pirker Vs FAA

Drone Case Settles: Pirker v FAA

Drone Case Settles This is a still from the video for which Pirker was fined. The full video is available in the link below. This case has finally been settled. In 2011 Raphael Pirker had been fined $10,000 by the FAA for using a Zephyr drone to capture aerial shots of the University of Virginia […]

Read More
The Future of Smart Drones

The Future of Smart Drones – The 3DRSolo

The 3DR Solo is the future of smart drones.

Read More


Leave a Reply

Your email address will not be published. Required fields are marked *


  • Forbes Magazine calls VideoUniversity one of the best business-to-business sites for digital video production.
  • WINNER
    Videography Magazine's
    "Website of the Month" Award
  • WINNER
    PC Magazine Online "Best Desktop Video Site" Award
  • WINNER
    CyberFilm School's "FOUR STAR" Award