YUV color records light in a way that closely matches human vision. The brightness of an image is captured in one channel, and the color is captured in two more, using a clever system to produce a complete range of colors without the three channels RGB has. Our eyes are better at perceiving brightness than color, and so YUV is a more efficient color system for human vision than RGB.
- [Voiceover] YUV color is the light,…sometimes called the luma,…then the blue and the red.…The green is worked out based on those two colors.…In fact, what I'm describing now…is technically called YcBcR.…That's luma and the color blue and color red,…but people often use these terms and others interchangeably…without any clear idea about the difference.…Actually, YUV uses a specific scale,…a graph if you prefer,…with U and V as readings on that scale.…
YcBcR is quite a lot to say,…so we use the term YUV as a more general reference…to an approach that puts luma in one channel…and colors into other channels.…In video editing systems, it's usually the luma,…that's measurable light,…the amount of blue and the amount of red,…or some other two color channel combination…that represents the color in the pixel.…The important distinction for me is that…one system just measures color, that's RGB,…and the other system separately measures the luma,…but when I'm speaking about these things,…what's going on in the pixel.…
Until now, I've been speaking about RGB,…
Get ready to remove the mystery behind terms you've encountered. If you work in a creative profession, this can enhance your command of the tools you use. Learn what a pixel really is, what color channels are, and what audio frequency is. Discover how color channels, bit depth, and video frame rates work. Find out the difference between codecs and file formats, and how compression is involved. By the end of this course, you'll know how to answer common client questions—like, whether a logo should be supplied in vector or bitmap form, and more.
Note: Motion graphics in this course were provided by Chelsea Parrish: chelseaparrish.com.
- What is a pixel?
- Aspect ratios
- Bit depth
- Alpha and transparency
- Light and color channels
- Color modes: RGB, YUV, CMYK
- Camera depth of field
- Chroma Key and Luma Key
- Blend modes
- Color wheels, vectorscopes, and waveforms
- Video compression and codecs
- Frame rates and timecode
- File formats
- Audio amplitude
- Capturing audio tone as frequency
- Audio timing using the phase
Skill Level Beginner
Learning Video Production and Editingwith Rob Garrott19m 25s Beginner
Video Foundations: Cameras and Shootingwith Anthony Q. Artis2h 58m Appropriate for all
Introduction to Video Dialogue Editingwith Ashley Kennedy3h 14m Appropriate for all
1. How Do Computers Think?
2. How Cameras and Computers Think about Color
3. The Language of Color
4. The Shape of Your Picture and the Speed of Your Video
5. Storing Everything (Codecs)
6. Color Wheels, Vectorscopes, and Waveforms
Understanding waveforms2m 39s
7. Making Changes
8. Audio Made Simple
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