From the course: Digital Media Foundations
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Showing frames on screens with their own refresh rates
From the course: Digital Media Foundations
Showing frames on screens with their own refresh rates
- [Instructor] There are three factors that can affect the display of the refresh rate for video on a monitor, or for that matter, on a projector: the frames per second of the video, the refresh rate of the screen, and the refresh rate of the lamp in the screen. Let's start backwards. The refresh rate of the lamp is usually much higher than the refresh rate of the screen. Let's say typically 200 Hertz, that's 200 times per second. By the way, I love explaining what Hertz means. There was a time when we didn't have a word for things that happened repeatedly every second, or times per second. A German fellow called Heinrich Rudolph Hertz proved the Theory of Electromagnetic Waves in the late 19th century, and cycles per second were named in his honor. So Hertz just means times per second, or cycles per second. If the lamp in a TV or projector runs at 200 Hertz, it's easily faster than the refresh rate of the screen. Screen refresh rates are usually set as the same as the video standard…
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