Sorry, I didn't have time to read your whole post, but, FieldDeinterlace() has the tendency to bring out those really 'bad' artifacts as is shown in one of your screenshots. To get rid of this, use Telecide() instead. I'll get around to your other questions when I have more time to read the entire post :) Be warned though, motion will still be pretty 'off' (most of the time it's hardly noticeable) even when using FieldDeinterlace()/Telecide(). If you want to keep the motion as smooth as possible, encode it as 'interlaced' with the right field order. Also, you should take note that 'interlacing' is usually very hard to spot when analyzing the video yourself (that's why you hardly see any difference when the FieldDeinterlace() line is used), it's probably best to run the VTS01 VOB set through DVD2AVI (load VOBs into it, then press F5) to double check if it's interlaced or not. And, yes, FieldDeinterlace() will slow down your encoding by quite alot. Your DVD also seems to be 'back-to-front', in most PAL DVDs these days, the movie is progressive, and the extras are interlaced - this explains why you have different AVS scripts (one requires deinterlacing, the other doesn't). I'm pretty sure it's not "ghosting", you've just captured it in a scene where motion is in place (ie, his head is moving, and so are his fingers). I think if you play the actual scene, this "ghosting" isn't there.