Slowmo-problemo

T

tmalay

New member
Kind of a newbie question but...I just got a DVX100B and cant put it down i've been shooting some snowboarding but am having trouble getting a smooth slowmotion. Im shooting on the factory F6 setting which i believe is 60i, with a shutter speed of 1/120. Im importing to FCP5 and slowing to 40% but am stilll getting jittery video.

I've been doing some research but cant seem to find anything that gets me a smooth slowmotion. I've tried using 24fps timeline (is this the same as a 24p timeline?), a 23.98 and a 29.97. Slowing to 40% and checking and un-checking "frame blending". Also, when i import clips, im importinig them at a frame rate of 29.97fps. Should i be importing in 24fps or change my import preset to something else? Anyone have any advice or could tell me what works for them would be greatly appreciated. Thank you
 
I would also like to see an answer to this question, capture and timeline preset. Meanwhile I am still searching the board for a possible answer.
 
Factory F6 is 24pA, not 60i. Already jittery if you don't remove pulldown on import and put on a 23.98 timeline. Slowing it would just emphasize the jerky nature of the 24pA pulldown. Someone else (and many threads) can give you more detail, but you wanna be shooting 60i for a smooth slowmo...
 
Here's what I've found using Final cut pro. This may go for any editor, but slowing down a track past 50% just gives bad results, think about it, you're stretching 30 frames (29.97 yes, yes, I know) over a longer period of time. Final cut blends those frames together to give a slow motion effect that eventually gets very noticalbe. a 24 or 23.98 timeline isn't going to make a difference because you're still using the same footage. On top of that you shot it at 1/120 instead of 1/60, which will making it more jittery anyways. The best thing I would say to do is slow it down to 24 fps from the 30 fps you shot it in (again, 23.98 from 29.97) then slow that down to about 75%, this should give much better results, you could even go as far as 60% or 50%, I'm guessing, but unless you're shooting at a higher frame rate (like the HVX can do) and slowing that down to the frame rate the time line is, you are always going to get jittery video because you're stretching the same number of frames out into a longer time. Hope this helps a little, let me know how it turns out. Oh, and one more thing, I'm not really sure but I think because you shot it at 60i, which is referring to the number of fields or interlanced frames per second, not the frames, and not in a progressive mode, this is going to make it more jittery than actually slowing down a true frame of video, which is progressive. Wow I think I confused myself trying to explain that! :)
 
I had to read that a couple of times but i think i get what your saying. thanks

I have to correct myself. I was shooting on the F1 setting and not the f6. dont really know why I put f6 but sorry. Anyway. I went yesterday and got a few good shots. I imported and slowed the clips down and the slowmotion was smooth. dont know what was different beteween the two days but for some reason i was able to get better slowmo with the new stuff. i'll have to figure out what was different.
 
A simple way to slow 60i footage is to import the clip into cinema tools, then conform to 23.98.

Very smooth, although not super slow-mo.

-CJ
 
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