hey yes.. that would work,
When I was using mvtools I did num=120 den=1 or num=240 den=1
dont worry about trying to maintain audio in sync or do audio timestretch... this feature is to play certain scene and check the video motion only.. the details of video scene.. not needed to fix audio
edit.-
I was testing with a script like this in ffdshow and tweaking "num" and "den" I got teh slow motion effect
so its posible.. I only need a way to add these controls (x2 x3 x4 , etc) in the SVP menu
svp_scheduler=true
SetMTMode(1,15)
V = ffdshow_source()
SetMTMode(2)
S = V.SVSuper("{scale:{up:0},gpu:1}")
A = S.SVAnalyse("{main:{search:{distance:2,coarse:{distance:-10}},penalty:{lambda:2,plevel:1,lsad:1600}},refine:[{thsad:250}]}")
V.SVSmoothFps = (S, A, "{num:5,den:2,algo:13,mask:{cover:0,area_sharp:2},scene:{mod e:0,limits:{scene:10000}}}", url="www.svp-team.com")
GetMTMode(false) > 0 ? distributor() : last