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What are some of the best 4K 120 FPS demo videos available online that showcase the capabilities of high frame rate video technology?

4K resolution is four times the resolution of 1920 x 1080 HD TVs, resulting in more vibrant and realistic colors.

Dolby Vision, a high-dynamic-range (HDR) technology, can display 12-bit color, increasing the color gamut and making colors more vivid.

120 FPS (frames per second) is five times faster than the standard 24 FPS used in most movies, allowing for smoother motion and reduced blur.

When 120 FPS footage is played back at 24 FPS, it appears 5 times slower, making it useful for slow-motion shots.

YouTube's maximum frame rate is 60 FPS, making it impossible to upload 120 FPS videos directly.

File sizes for 120 FPS videos are significantly larger than those for standard resolution and frame rate videos, making them more challenging to work with.

4K resolution at 120 FPS requires powerful hardware to render and play smoothly, making it essential to have a recent GPU and a 120Hz monitor.

Cameras capable of capturing 120 FPS footage can be obtained for under $200, making high-frame-rate video production more accessible.

To play 120 FPS videos in real-time, a tool like ffmpeg is needed to speed up the rate from slow-motion to real-time.

The human eye can process up to 120 FPS, making high-frame-rate videos more visually appealing and reducing eye strain.

Dolby Vision Demo 4K HDR videos can be used to showcase the capabilities of high-dynamic-range (HDR) technology and high-frame-rate video.

High-frame-rate videos can reduce the "soap opera effect" or "motion interpolation," which can make video look unnatural and cheap.

Some monitors and TVs can display 4K resolution at 120 FPS, but not all devices can handle this high frame rate.

Free 120 FPS videos can be downloaded from websites like Videvonet, providing high-quality stock footage for personal or commercial projects.

Tests have shown that Chrome, Internet Explorer 10, and Firefox 25 can play 120 FPS video in real-time, but only with compatible hardware.

The UFO Motion Test, a benchmarking tool, can be used to test the motion blur and judder of 120 FPS videos on different devices.

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