Quote - I've stretched time for rendered animation using both Pinnacle Studio Ultimate 12 and Sony Vegas Movie Studio HD Platinum 11.  Their stretch limits were 4x I think though.  I was stretching 3 sec (90 frames) to 12 sec (360 frames).  Both did just fine as far as I could tell.  I'm guessing you've already done something similar.  There is also VirtualDub that can slow things down.  But it only works with AVI format.

Or are you trying not to slow down.  But keep the same motion speed.  Just without jitter/jumping?

Yeah I've also seen time stretching in other tools like Power Director, but that one in particular doesn't frame blend. So each frame is just held longer, and it can create a bit of a 'stuttering' side effect.

Just curious: Did Pinneacle Studio do frame blending?Were there portions in the video that moved fast and got a bit of ghosting, showing bth frames at times? (50% weight each)