How can I optimize this code?

[shoopdabloop]

I was trying to make a 60i->24p+simulated motion blur script for half an hour, and I could only get it to work like this:

loadcplugin("c:\program files\avisynth 2.5\plugins\yadif.dll")
loadplugin("c:\program files\avisynth 2.5\plugins\mvtools2.dll")
source = AviSource("Tape 2 - Clip 012.avi").ConvertToYV12().AssumeBFF().Yadif(1).RemoveGrain().Blur(0.16)
super = source.MSuper()
mvbw = MAnalyse(super,isb=true)
mvfw = MAnalyse(super,isb=false)
source.MFlowFps(super,mvbw,mvfw,num=24000,den=1001)

super2 = last.MSuper()
bv = MAnalyse(super,isb=true)
fv = MAnalyse(super,isb=false)
last.MFlowBlur(super2,bv,fv,blur=20)

I'm getting ~6 fps output. Is there any way I can make it faster?

Also, if the original footage was filmed with 1/60 shutter speed, what blur value should I input into MFlowBlur if I want it to look like it was filmed with 1/48 shutter speed?

[Adub]

If you have a dual core cpu, you could use MT Avisynth.

[shoopdabloop]

How would I run MFlowFps and MFlowBlur multithreaded? SetMTMode?

[Sagekilla]

There's not much you can do. Unless you're willing to sacrifice some quality, you can't really make it faster.

Edit: Yes, you would use SetMTMode if you want to use MT. MVtools 2 supports multithreading nicely with SetMTMode, unlike the last (depreciated) version. Be sure to put your SMM() call ALL the way at the top of your script.

[shoopdabloop]

Yeah, I'm sticking with simple Yadif() 30p, because the crazy slow speed and artifacts of MFlowFps and MFlowBlur just aren't worth it.

[Sagekilla]

I'm not surprised at all you're getting artifacts like that: You're doing frame rate conversion on an -interlaced- source. No good! I didn't notice this at first. I thought it was 60p -> 24p.

Try doing yadif -> 24p + motion blur instead.