Background: I did some exhaustive testing to handle the final output of stutter. For several it was pretty bad with clips of different Frame Rates one with 23.967 and the other with 25 (I was just using two clips and two FX's along with a transition to get a benchmark idea how to proceed with my longer clips). Then I converted the one that had a higher Frame Rate so it matched the 23.967 but I still got stutter. I tried changing one setting at a time in Preferences that I thought could affect it - no change. I even tried various formats using different bitrates and frame rates - no change on most (see below for the 60 setting). I played back the original clip on its own as well as removing one clip from the timeline....no stutter. I also removed the FX's - no change again. The only time it got close was when I ramped the Frame Rate output to 60fps but it went back to the bad stutter when I used the highest Frame Rate....the one over 100. So the 60 Frame Rate setting helped a lot but not 100% smooth as there was still slight stutter in all the horizontal camera movements. After reading what the definition of a 60 Frame Rate will do does indicate the eye perceives it much smoother but in reality a lower P (progressive) Frame Rate is always better than an I (interlaced) level. This turned out to be correct and the result was true. Trying settings below 60 (inc. the 30, 29+, 25, 24, and 15 as well) - no change.

So the question is: Has anyone else found Stutter using the same/different Frame Rate value using multiple Clips and then found a solution so the entire video is smooth as the original clips as the original clips but joined together in the rendering process from beginning to end? Ideas or thoughts would be appreciated!

As a note I am also using a Trial version of Vegas Pro 15 (very recently released and is the newest available on their site) and it handles different Frame Rates and renders them correctly together without any Stutter whatsoever! The output is beautiful but painfully slow rendering (2-3 times longer in my trial testing). I did read that it is common for this product to handle different Frame Rates and is likely a big benefit. This is probably a very good reason why people would find this software valuable.

Thanks! David L