Fix a badly de-interlaced video (with avisynth if possible)

[Roemer]

Hello all
I got hands on a very badly deinterlaced video which seems to be at least encoded afterwards and possibly upscaled a bit.
The video still shows deinterlacing lines and also ghosting and I tried dozens of things in avisynth (QTGMC, tdeint, Bobbing, ...) but the result is still bad. The main issue I think I have is that the interlaced lines seem to be too wide so I cannot separate fields and then there is also the ghosting problem.

Anyone here who might have an idea how that video could be fixed?
I attached a small sample.

Many thanks for your help!

[davexnet]

I think you're out of luck. The video is essentially progressive, the two fields are identical, all those
ugly blends and artifacts are "baked in"

[Selur]

The blends are the main problem, since it's cartoon combing could probably be removed by down scaling height by 2 and after then resizing back to the original resolution,....

[Roemer]

Ok thanks for the information. I guess I am out of luck then.