I really don't see anything obviously wrong with this footage, aside from that gigantic halo on the left side of the girl's head in the second shot and the combing noise in the punk's mouth in the second-to-last one.
Is the halo present in the original source? If it is, then it's so far away from her head that I really don't think you can do anything about it. If it's not, then that's really bizarre, because FluxSmooth shouldn't cause artifacts like that (but it's the only thing in your chain that might).
As for removing the combing noise, I would try tweaking the
vthresh and/or
dthresh parameters to Telecide, which Absolute Destiny explains
here. You might also try setting
guide=0 (blind matching), especially if many other frames have similar problems.
That, or just switch from Decomb to TIVTC.