What exactly is the difference between anamorphic and non-anamorphic video??

Discussion in 'Playback Devices' started by kurt_fire, Jun 5, 2004.

  1. kurt_fire

    kurt_fire Stunt Coordinator

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    i've never quite known what exactly the difference is. can someone please explain what this means to me.
     
  2. NickSo

    NickSo Producer

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  3. Neil Joseph

    Neil Joseph Lead Actor

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  4. Allan Jayne

    Allan Jayne Cinematographer

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    The video content is intrinsically the same, 480 scan lines (rows of pixels) high by about 720 pixels wide.

    The "anamorphic" video was shot or telecined based on a 16:9 video frame aspect ratio and therefore looks better when the raster on the picture tube is stretched to 16:9 while the "regular" video looks better when the raster is stretched to 4:3 (or the video including any pre-recorded black bar material on top and bottom spread out over a group of pixels encompassing the respective shape).

    On DVD there are flags included with each video frame so a TV with the capability automatically goes into the proper aspect ratio, or the DVD player can if you wish reformat the video as 4:3. The TV cannot tell by analyzing or taking hints from the video content.

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

    Don_Berg Supporting Actor

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    Anamorphic DVD title has higher vertical resolution for the image since the image is stretched vertically to cover the 480 lines available in DVD format. Older non-anamorphic is letterboxed and the black bars are part of the 480 lines - its the same as letterboxed programs broadcast on regular TV channels. The DVD player when setup for a 4:3 display will letterbox (add black bars) itself to the output for anamorphic DVDs so the extra resolution is lost, but with it setup for a 16:9 display the full vertical resolution goes out.
     

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