BlindPP: work in YV12 colorspace ?

Hello first time here, and I use script to make kvcd's but I figured since it does use avisynth I could get some help here. I keep getting a "BlindPP: work in YV12 colorspace" error with this script: Code:

Put a convertToYV12() before your blindPP in order. If your avi contains either XviD, DivX 5 or ffvfw, you can also ( instead of using convertToYV12() ) try putting pixel_type = "YV12" inside the AVISource line.

thx I'll try it :)