Why can't I get the hang of deinterlacing?

I'm afraid I don't know avisynth, but I suspect your problems could be related to field dominance. I have no problems deinterlacing this (with yadif) specifying top field first.

I'll try Yadif, I don't have it and the download link was down, probbably on warpenterprises also. Well I tried removing the selecteven and letting it run at 50fps and it was indeed smooth*, so I guess that's the reason, I can try to figure out how to re-interlace it or have a 50fps section. Oddly though the 50fps file is smaller on crf than the 25fps one. *For some reason, it is smooth then stops, then jerks forward. It stops doing this if I go full screen and then mouse down to bring up the seek bar.. wierd.

Try this (really simple): Code:

It's TFF interlaced scrolling credits in B&W. That is very challenging for any single-rate deinterlacer. Any decent bobber can make it look fine. Playing the AVS script will probably be jerky due to processing delays but the encoded result is fine. I used this: loadplugin("dgavcdecode.dll") AVCSource("E:\tmp\cut.dga") leakkernelbob(order=1,threshold=0) You can replace leakkernelbob() with leakkerneldeint() and it looks OK but not as smooth.

Thanks Neuron, those work too, LKD leaves artifacts when threshold is left, but setting them to 0 gets rid of them.