How do 16x9 enhanced DVDs work on 4x3 sets?

Discussion in 'Displays' started by Curtis Anderson, Feb 10, 2004.

  1. Curtis Anderson

    Joined:
    Aug 27, 2003
    Messages:
    22
    Likes Received:
    0
    see topic. What we all need to know is how these enhanced DVDs work on 4x3 sets that can't do the "anamorphic" squeeze. The only way I can see it working is if the horizontal resolution is cut down. Thank you.
     
  2. jeff peterson

    jeff peterson Supporting Actor

    Joined:
    Nov 29, 1998
    Messages:
    675
    Likes Received:
    0
  3. Allan Jayne

    Allan Jayne Cinematographer

    Joined:
    Nov 1, 1998
    Messages:
    2,404
    Likes Received:
    0
    You are correct (I think you mean vertical resolution).

    So long as the 480 scan lines are evenly spaced over the 4:3 screen, you cannot have 480 scan lines within a 16:9 shaped space.

    You may find a VSIZ or height control at the back of the TV, adjusted with a screwdriver. Then you can leave the DVD player in 16:9 mode. This is the same thing that a 16:9 switch on a 4:3 TV uses to change aspect ratio. A serviceman can install a duplicate control on the front of the TV for you. There is no guarantee that the convergence or geometry won't go bad when you change the aspect ratio, sometimes on sets that officially have a 16:9 switch the convergence is adusted to be a compromise.

    Video hints:
    http://members.aol.com/ajaynejr/video.htm

    You will have to set the DVD player to 4:3 Letterbox if you can't adjust the TV.
     


  4. It's my understanding that every DVD player (per the format specs) has a built-in scaler which converts the 16x9 DVDs to 4x3, if needed.

    Your 'TV type' is specified in your DVD player menus, default is 4:3 (this setting would indicate 'scale to 4:3').

    There is an loss of resolution density in the image area and scanlines will be more apparent.

    My advice would be to at least get a 4:3 TV with a 16x9 mode.

    Now, if only every DVD player had a scaler to convert 4:3 DVDs to 16x9...
     
  5. John S

    John S Producer

    Joined:
    Nov 4, 2003
    Messages:
    5,460
    Likes Received:
    0
    "My advice would be to at least get a 4:3 TV with a 16x9 mode."


    Beware on this too, at least some, but I believe many of these 4:3 sets with this mode, only work on 1080i sources, 480p still locks full 4:3....
     

Share This Page