Regarding the tdeint problem, I *think* older versions of tdeint were working properly. I don't have an old version on hand to try it anymore though.
Edit: and here is a sample clip you should be able to see the problem with.
Open this script in virtualdubmod and look at frame 141. Then do edit>refresh.
http://zarxrax.kicks-ass.net/test.demuxed.zip