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Slow motion in FCPX
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[Josephus Tudtud] “Is it OK how can I make it better…”
Twixtor allows more control and key-framing.[Josephus Tudtud] “I have confidence in the optical flow’s ability but i guess the question is what type of shots will produce the best slow motion.”
You are very right. Planing the shoot is key.
Shooting to slowmo you have to take in to account the movement inside the picture and the camera movements.
The more things move, the more difficult to get a good slowmo.
When moving things enter or exit the scene and when they cross each other, things get very complicated for a good Optical Flow.
A motorbike jumping in front of a static camera with a sky blue as the background, will look great; A traveling camera shooting 12 football players fighting for the ball, will look horrible.
You use high-speed cameras to do that.
rafael -
For Josephus- Your slo- mo footage is superb. When your subjects in the first video, belly dancer, goes into slo motion, they seem to blend into each from, there is no strobbing at all. How did you do this. I’ve shot a lot of footage with my Canon XF300, 1080i @ 50 MBS and at 5% I get stuttering, strobing, etc. Yours seems as if you some how blended stills . It’s really excellent.
Can you share some of your trade secrets.
Many thanksDon
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Not familiar with Sapphire Edge, all fx were in FCP X…
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Dan, I just clicked 10% speed and then dragged then stretch the clip on the timeline to make it 3%.
I’m still experimenting with this feature, so I really have no secret how to achieve the right effect. Im not even sure if I’m doing it right… Before I begin the project, I ensure its 24p in Custom, then drop in my 60fps clip and stretch time to 3% speed. I guess its automatically conforming the 60fps’s down to 24… I’m guessing it just have that much more information in between frames as oppose to 50fps to 24p when using optical flow.
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Sorry for my embedded video auto playing, not sure if its just me, but its auto playing everytime i reload the page….
How can I prevent my embedded vimeo video from auto playing… its annoying !!
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can you show me a sample of the strobbing effect?
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Hi- I tried the effect as you had outlined in FCPX, though I use FCP 7 for all of my work. Even though I shot in 24p, and used a 24p timeline, the final result using optical flow in FCPX at 3% was excellent, not unlike what you did. I assume it would even look better shooting at 60i and down sampling at 24p then applying the slo mo filter.
The strobing is the standard speed change in FCP 7.
You can see it at 30 secs. in this YouTube video, https://youtu.be/3DryIEGSOAkI did run a test and exported some clips to Motion in FCP7 using that version of optical flow, but it was not as good as FCPx’s.
Don
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I see what you mean now by strobbing. Honestly Im not quite sure how I prevented that in my footage. However you did mention 60i and I believe my Canon 60D shoots at 60p. Perhaps interlaced 60fps is more susceptible to strobbing as oppose to progressive 60fps. When the softwares tries to look for those frames in between during optical flow, the I interlaced images may not allow a smooth rendering… I do not have any cameras that shoots interlaced video anymore so I cannot confirm this.
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As far as the shutter speed is concerned is it better to have as high a speed as possible to get the best effect just as long as it still allows correct exposure?
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