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Common Intermediate Format

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  1. CIF (Common Intermediate Format), also known as FCIF (Full Common Intermediate Format), is a format used to standardize the horizontal and vertical resolutions in pixels of YCbCr sequences in video signals

    Source: Wikipedia Unhappy with this fact? more info
    created by user pictureivideo on September 1, 2011
  2. CIF was designed to be easy to convert to PAL or NTSC standards. CIF defines a video sequence with a resolution of 352 × 288 like PAL Source Input Format, a framerate of 30000/1001 (roughly 29.97) frames like NTSC, with colour encoded using YCbCr 4:2:0

    Source: Wikipedia Unhappy with this fact? more info
    created by user pictureivideo on September 1, 2011
  3. xCIF pixels are not square, instead having a native aspect ratio of ~1.222:1

    Source: Wikipedia Unhappy with this fact? more info
    created by user pictureivideo on September 1, 2011
  4. The CIF "image sizes" were specifically chosen to be multiples of macroblocks (i.e. 16 × 16 pixels) due to the way that discrete cosine transform based video compression/decompression is handled

    Source: Wikipedia Unhappy with this fact? more info
    created by user pictureivideo on September 1, 2011
  5. SIF (Source Input Format) is practically identical to CIF, but taken from MPEG-1 rather than ITU standards. SIF on 525-Line ("NTSC") based systems is 352 × 240, and on 625-line ("PAL") based systems, it is identical to CIF (352 × 288)

    Source: Wikipedia Unhappy with this fact? more info
    created by user pictureivideo on September 1, 2011
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