I don't recommend to put 180 Minutes on one Disc.You better 2 CD's with KVCDx3 and a 528x488(PAL 576) resolution.
I use this script to encode my DVD Movies:
Code:
LoadPlugin("F:\Programme\AviSynth2\mpeg2dec.dll")
LoadPlugin("F:\Programme\AviSynth2\fluxsmooth.dll")
LoadPlugin("F:\Programme\AviSynth2\GripFit_preview.dll")
LoadPlugin("F:\Programme\AviSynth2\blockbuster.dll")
LoadPlugin("F:\Programme\AviSynth2\legalclip.dll")
LoadPlugin("F:\Programme\AviSynth2\sampler.dll")
LoadPlugin("F:\Programme\AviSynth2\convolution3d.dll")
LoadPlugin("F:\Programme\AviSynth2\dustv5.dll")
LoadPlugin("F:\Programme\AviSynth2\decomb.dll")
LoadPlugin("F:\Programme\AviSynth2\temporalcleanerold.dll")
LoadPlugin("C:\WINDOWS\system32\vobsub.dll")
mpeg2source("G:\Episode2\Episode2Project.d2v")
LegalClip()
GripCrop( width=528, height=576, overscan=2 )
GripSize()
FaeryDust()
TemporalCleaner()
Convolution3D(preset="movieHQ")
VobSub("G:\Episode2\VTS_01_0")
GripBorders()
LegalClip()
#Sampler(length=24)
## MPEG size = ((Total frames/MovieTimeInMinutes)/24) * MPEG sample file size ##
You Just have to use the file prediction to get the right CQ.