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Apple Pro Training Series: Motion 4 by Mark Spencer

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Lesson 12. Speed Changes and Optical Flow

It’s rare to see a title sequence or an advertisement where the video hasn’t been sped up, slowed down, or both: A car races toward the camera and suddenly slows to a crawl as it passes by; a skateboarder flies off the edge of a ramp and freezes at his apex; a new laptop spins around in a blur, slows down suddenly so that it’s barely moving, and speeds up again ...

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