REF:http://en.wikipedia.org/wiki/Chroma_subsampling

REF:http://www.sunrayimage.com/faq.html

  1. What's sampling format?

    This is the format to define how the three components (Y,U, V or R, G, B) are sampled,  including :

    • YUV 4:4:4: Y, U and V are all in sampling format, no being down-sampled

    • YUV 4:2:2: Y is in full sampling format, while U and V are down-sampled horizontally

    • YUV 4:2:0: Y is in full sampling format, while U and V are down-sampled both vertically and horizontally

    • RGB 4:4:4: R, G and B are all in sampling format, no being down-sampled

  2. What's interlace/progressive format?

    This is to define whether the video frame (the whole image) is a single progressive frame, or two interlaced fields

    • One single progressive frame:

    • Two interlaced fields:

  3. What's pixel packing format?

    This setting is used to specify the organization of YUV components for each pixel, whether in planar format or packed format:

    • planar format: Y values for all pixels are put together, as well as U and V, like: YYYYYY......UUUUUUU.......VVVVVV......

    • packed format: pixel YUV value are packed together as: YUV, YUV, YUV,....

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