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Reply #10: It's caused by the slow motion [View All]

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Home » Discuss » Topic Forums » September 11 Donate to DU
anigbrowl Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Dec-16-08 05:40 PM
Response to Original message
10. It's caused by the slow motion
The original video is likely 30 frames per second (well, technically 29.97 but you don't want a lecture on NTSC specifications).
Slowing it down to 200 fps means stretching the video out to almost 7 times the original length. Of course, that would look very choppy and jerky because there would only be movement every 6-7th frame, so many video editing/FX packages will use a technique called interpolation - analyzing the image in each frame and then generating a new image based on the difference between pairs of frames. Unfortunately it's not perfect, which is why bits of the plane keep flickering.

So yeah, there is CG involved; but not to put the plane there, just to slow down its movement. If it was footage of something unremarkable (someone jogging down the street, say), you'd have the same problem, bits of the jogger's legs or clothing would be flickering.
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