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Old 22nd October 2005, 11:41   #49  |  Link
unmei
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Join Date: Jan 2003
Location: ch-2500
Posts: 891
Maybe this is totally obvious to anyone but me, but since it was not for me i thought i would mention it: Adaptive Quantisation will not only produce quantisers in the set QP range (QPmin, QPmax).

Probably i just had the wrong concept of these and they do not represent the actual quantizer limits but the limits of average quantizer in P frames (or something along that line).

I'm currently playing with the AQ and CQ vs CRF settings and let the QP range at default [10,51]. What i found so far are Q8 blocks in all frame types (I,P,B) ..and they are not rare at all, they might make up like a third of the frame.


Note that this is not a complaint, just a statement


So far i really like the one movie i did completely with AQ and CQ 26 and as long as the result looks good i am not "against" low quantised blocks. Tho i might turn down the AQ strength a bit for the next movie (0.3 maybe), that is i do these tests right now to get a feeling of the AQ parameters.
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