[Rene Van den bosch]

I registered specifically to answer you (and because I like the forum in general, but this was a more dramatic entrance). I think I know why there’s conflicting advice in this regard.

Often times when people want to play around with slow-mo, they’ll use high fps footage. For example, my Canon 550D can record at 60fps.

Now if my output was a 30fps movie for say, Youtube, I could slow down to 50% by simply doubling the time between individual frames. This is a very clean way to do it because (a) you don’t blur any individual frames and (b) there’s no stutter, because the numbers match up nicely (at no time does the software need to create or delete frames).

In the case above, you *absolutely* want to disable resample, because all it can do is create software blur and diminish the quality of your footage.

However, the resample option was created for a reason. Sometimes, you want to slow down footage where the framerates do not match up nicely, or they do but there’s not enough frames for any illusion of smoothness (try cutting 24fps footage in half).

In those cases, you need resample, because the alternative is as you describe: either jittery because of missing/interjected frames, or jittery because not enough frames.

Hope that answers your question.