Quote:
Originally Posted by shae
How does a change in DCT resolution affect the final pixels? For example, will a 10-bit YUV input encoded with 8-bit DCT precision yield roughly the same as if the input YUV was truncated to 8-bit, or is the relation non-linear?
Sample bit-depth, as in, the source RGB/YUV?
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There is no strict dependency except well agreed that DCT should be calculated (DCT precision) with at least 3 - 4 more bits.
Remember that DCT is different domain (frequency) and DCT describe different aspect of signal (imagine DCT as special case of FFT where whole spectrum is divided for equally spaced parts (bins) and you measuring level of frequency content in middle of the bin).