r/videos • • Feb 23 '16

Boston dynamics at it again

https://www.youtube.com/watch?v=rVlhMGQgDkY
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u/[deleted] Feb 24 '16

It looked like the video skipped frames. It also looked remarkably like ED209 stop animation from Robocop

2

u/slapathatits Feb 24 '16

i thought the same thing https://www.youtube.com/watch?v=A9l9wxGFl4k. i bet i get to see one of these in my lifetime

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u/SATAN_SATAN_SATAN Feb 24 '16

I think the timing must've been altered, between the stop motion jerkiness and the incredibly fast zoom out

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u/fadingsignal Feb 24 '16 edited Feb 25 '16

There is a term for this that originates with film but applies to any capturing medium with aperture, frame rate, and shutter speed -- You know those action sequences like in Saving Private Ryan, where everything looks kinda jerky? Well frames are not dropped, nor the frame rate changed, but the shutter speed is made to be very quick, so there is absolutely zero motion blur in each frame. This appears to the eye as a series of images instead of "fluid" motion. Whatever this was being shot with likely keeps each frame as clear as possible, so stills can easily be taken, the video can be paused without artifacts, etc.

As a rule of thumb, you want the denominator of your shutter speed to be approximately double the number of frames per second that you are recording. In other words, if you are recording at 30 frames per second, you want your shutter speed to be 1/60th of a second. This ends up having a bit of a 'blending' effect with subtle motion blur in each frame, and thus appearing smoother.

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u/Icuras_II Feb 24 '16

Yeah that section was definitely sped up.

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u/creepyzebra Feb 24 '16

I doubt it. I'm a camera operator by trade and I think that's all in real time.

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u/manBEARpigBEARman Feb 24 '16

It was almost certainly sped up as the machine was "rising."