Most video and broadcast TV is created using 8 bits per channel. This means that each channel goes from 0 to 255. Those numbers are a direct result of using 8 bits—but what if we used more? This lesson explains what happens when you move to 10 bits per channel and beyond. If anyone has ever asked you if you would like 10-bit visuals rather than 8-bit, this lesson can help you answer the question.
- [Voiceover] Every pixel has color values based on bits.…The more bits you use for each pixel,…the more steps between completely off and completely on.…If we were just talking about a black and white image,…we could represent each pixel with one number,…a monochromatic single channel,…which would indicate brightness.…Because we usually work with color,…we have bits assigned to each color value,…so there are three numbers in total.…A eight bit pixel can go from completely off…to completely on in 255 steps.…
That's 256 possible steps, with the first one being zero.…Because each bit doubles the range of possible numbers,…if you work with ten bit images,…you get double and double again the number of steps.…So ten bit pixels go from zero to 1023.…1023, on a ten bit pixel,…is no more than 255 on an eight bit pixel.…It's the same maximum amount of brightness or color,…but the number of steps taken to get there is much,…much more, creating many more potential colors,…and giving you a more accurate representation…of the original subject.…
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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