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PAL Pixel aspect ratio

Discussion in 'Hobby Electronics' started by AJD, Jul 17, 2003.

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  1. AJD

    AJD Guest

    Can someone enlighten me on what the Australian TV broadcast PAL pixel
    aspect ratio is?

    (Not to be confused with the screen aspect ratio)

    AJD
     
  2. Rod Speed

    Rod Speed Guest

    No such animal with an analog standard.
     
  3. Phil Allison

    Phil Allison Guest


    ** Broadcast PAL is analogue - so pixels are not involved. The video
    information bandwidth is about 4.5 MHz into which luminance and chrominance
    signals are squeezed.

    625 interlaced lines are used but about 50 are black.



    ............ Phil
     
  4. Russ

    Russ Guest

    This tends to be cause for debate - unlike NTSC pixels which are tall, PAL
    pixels are wide. In the digital video world, a D1 PAL frame is 720x576, and
    for a 4:3 picture, the pixel aspect ratio is therefore 1.067. However the
    active picture is 702x576 which equates to 1.094, which is the basis for
    MPEG-2 on DVDs.

    Russ.
     
  5. Phil Allison

    Phil Allison Guest


    ** The OP asked for "PAL broadcast.... " - you are reading his mind by
    relating that to digitisation of the signal.




    ............ Phil
     
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