[XviD-devel] hq ac prediction mode

[Edouard Gomez]

Very basic test with "Le fabuleux destin d'Amelie Poulain"

First 10000 frames sequence (frames resized to 640x272)

Quantizer |   Size   | Options
----------+----------+---------------------------------------------------------------
    q3      81223900   base options
    q3      80142222   base options + PMV_CHROMA16 + PMV_CHROMA8
    q3      81110018   base options + HQ acdc prediction
    q3      79989286   base options + PMV_CHROMA16 + PMV_CHROMA8 + HQ acdc prediction

It saves 0.15% for non chromaME and 0.19% for chromaME while
just using chromaME can save 1.3%

base options are:

[export_xvidcvs.so]	Constant Quantizer: 3
[export_xvidcvs.so]	Max keyframe Interval: 250
[export_xvidcvs.so]	Max BFrame Sequence: 1
[export_xvidcvs.so]	BFrame Quant Ratio: 150
[export_xvidcvs.so]	BFrame Quant Offset: 100
[export_xvidcvs.so]	Motion Flags:
			PMV_ADVANCEDDIAMOND8
			PMV_ADVANCEDDIAMOND16
			PMV_HALFPELREFINE16
			PMV_EXTSEARCH16
			PMV_HALFPELREFINE8
[export_xvidcvs.so]	Global Flags:
[export_xvidcvs.so]	General Flags:
			XVID_H263QUANT
			XVID_HALFPEL
			XVID_INTER4V

-- 
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