Problem with "Frame-based" and Resize with z_convertformat

[Kuronoe]

Hi everyone, I hope you are alright.

I have a problem that I can't find a solution, I'm trying to use z_convertformat for a test, but every time I try it returns the following problem: "Clip must be Frame-Based". I tried a lot of things I could think of, including the obvious one being adding "AssumeFrameBased" and it didn't work. And I can't find anything on the avisynth wiki that gives me a better result.

If I change nnedi3_rpow to AIUpscale it works without errors, but this filter is too slow for my setup. I know I could use ColorMatrix, but z_convertformat seems to return a better result.

My code:

##Sourcer
DGDecode_mpeg2source("C:\Encoder\Anime\T01.d2v", info=3)
##matrix
ColorMatrix(hints=true, threads=4)
##Deinterlace
AnimeIVTC(mode=1, threads=4)
##crop
crop(4, 0, -4, -0)
##Bits-depth
#ConvertBits(16)
##Scale
#AiUpscale(Factor=2, Luma="HQ Sharp", Chroma="Spline36", mode="LineArt", OutDepth=16)
nnedi3_rpow2(rfactor=2, nsize=4, nns=3, qual=1, etype=0, pscrn=2, cshift="Spline36Resize", fapprox=0, threads=4)
z_ConvertFormat(width=960, height=720, resample_filter ="Spline36", colorspace_op="470bg:601:470bg:f=>709:709:709:f", dither_type="none")
##Bits-depth
#Convertbits(8)
#fin

Thanks for your time and help.

Ps: This script works with nnedi3 or AI if I change the input video to any progressive mkv video.