I just seen a video on YouTube, showing different deinterlacing methods.
Clearly of the methods shown, TempGaussMC was the superior. It has since been surpassed by QTGMC...both of these are very slow...and given your wizardry with fast quality noise removal (Neat 30fps vs MCTemporalDenoise 5fps). I was hoping that maybe you guys could look into making a fast quality deinterlacer.