I've gone through the forum here looking for the answer but it seems i've got a different snag. At 10% velocity the clip stops for a 1/4 sec then carries on, then stops for 1/4 sec etc. It is always after the same amount of time, about a second, and the frames still increase as if 20 odd still frames have been inserted into the clip. The clip will flow nicely for about a second before this rythmic stagnation for about a 1/4 sec. I've experimented with all the fields and interlace stuff, interestingly both vegas 4.0 and 6.0 do the same thing. Really need some help, please, messing up my slow motion water-skiing video unfortunately. Cheers.