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Old 8th November 2016, 16:30   #6  |  Link
Ataril
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Join Date: Oct 2016
Posts: 8
Thanks again for all the valuable information that you gave!

And if we go further there are more obscure fields concerning the sizes of macroblock. As far as I understand coder chooses the appropriate size (such as 16x16, 8x8 or smaller) depending on the area's detalization in the frame (in order to provide better quality and compression of the video). For detailed high-frequency area it is reasonable to use smaller macroblock size and vice versa.
But how it's evaluate where is the smooth areas in the frame and where is not? How much should be the differences between these areas so the coder decides to use one or other macroblock size? It should compare values in the matrix or brightness or chroma or both?
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