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by BuckyF on October 26th, 2003

BuckyF

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What's the difference between interlaced and progressive scanning?

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  • by BuckyF on October 26th, 2003

    BuckyF

    Interlaced scanning shows half of an image (on the odd rows of pixels) every sixtieth of a second, and then it shows the other half (on the even rows) the next sixtieth. Therefore, it takes one thirtieth of a second to show a complete frame, giving a framerate of 30 frames per second.

    Progressive scanning shows the entire image every sixtieth of a second, so the framerate is twice as high - 60 frames per second.

    Therefore, progressive scanning creates a smoother image, and is preferable if you have a choice.

    Comments

    • But, PS is not always 60fps - and dont forget PAL 25/50

      Ken Williams

      by Ken Williams on January 18th, 2004

    • "Progressive" is a newly coined term for non-interlaced video; it is less descriptive than the old term.

      RedJohn

      by RedJohn on January 8th, 2006

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