There is no "xxxsource" anywhere in the script. Did you mean after "DGDecode_mpeg2source("C:\VIDEO_TS\VTS_05_1.d2v", info=3, cpu=6)" ? Code:

can you try to post an "interlaced" frame, i cant see anything wrong with this frame

I can see the issue now, the chroma is not blended but not synced to luma, you need to do a manual decimate to make luma and chroma synced, use "ovr" function in tdecimate

To use an override file? But i have no idea how to make one that'll decimate chroma and luma separately and sync them. The help file for tdecimate doesn't specify it either. Although, as lansing said, when IVTCing with just tfm().tdecimate() and where the crop part is after the IVTC part (See picture post #11), the chroma and luma were in sync, the only problem then was some telecined frames remaining because of the bizzarre telecining pattern this video has. Wouldn't the solution lie more towards tweaking a IVTC plugin to handle the unusual pattern (tdecimate, QTGMC, yadif)?