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mpeg4_tech
1st May 2003, 22:59
I'm using the new Gknot .28 and so far so good. I just encoded my first Xvid movie and was pleasantly surprised with the results. Though, on dark scenes I was rather disappointed at the darkness of the frames. Any suggestions on Xvid configuration to possibly alleviate too much darkness in dark scenes.
My set up configuration was as follows:

Motion search Precision: 5 Very High
Quantization type: H.263
FourCC used: XVID
VHQ mode: 1

Max I-frame interval: 300
Minimun I-Frame interval: 1

Use Chromo motion: checked

Max B-frames: 2
B-Frame quantizer ration %: 150
B-Frame quantizer offset: 100
B-Frame threshold: 0

DX50 B-VOP compatibility: checked
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Any suggestions on what can make dark scenes look brighter? I also used the Lanczos sharp filter as suggested in the Gknot guide. The movie I encoded was The Outlaw Josey Wales, approx 2:15 hours in length; I used 2 cd’s at a bitrate of about 1200kbps.

I know I need to learn more about what all Xvid has to offer, understanding, etc, though simple suggestions on configuration for brighter dark scenes would be appreciated. Thanks

cult
2nd May 2003, 16:58
decode with ffdshow and tweak the gamma or brightness settings
Or when encoding tweak the lumafilter() to add brightness