Thanks for the feedback Dali Lama. On the guavacomb issue would you mind putting up the exact script you used. It is hard to determine the possible causes without a little more info, but using guavacomb before tfm should tend to improve accuracy and not hurt things as long as the settings are resonable. Also, when you say it works correctly w/o guavacomb does that mean it works if you convert to yuy2 and then use tfm or if you leave the clip in yv12 colorspace?
And yeah, kenshin has some problems, at least the first couple r1 dvds have blended fields
if I remember correctly. I don't know about later on in the series...