Computers use binary for the little known reason that it's actually incredibly hard to record, store, transmit, and recover information. By simplifying the type of information stored to one of just two states—off/on, yes/no, up/down—it's possible for engineers to develop a wide range of systems to manage it. This video explains the challenge and some of the solutions we have to this data problem.
- [Voiceover] The beauty of binary is that it allows us…to use a very elegant form of mathematics.…I'll explain how this works in the next lesson,…which I highly recommend you take the time…to watch through and really understand.…It's not just the elegance of the design though.…There's a fundamental problem computers…have always struggled with:…Reality.…In the real world, things are not always fully OFF or ON.…In fact they're usually mostly OFF, or, mostly ON.…Consider the binary options of light and dark.…In reality, a thing is rarely, truly, all light or dark.…
It's usually "quite dark" or "quite bright."…How can a computer decide if a "quite bright" thing…is a one, or a "quite dark" thing is a zero.…In the case of magnetic hard drives, each one or zero,…is stored in its own domain; a little space on the drive…that can be magnetically charged with…the magnetic polarity set one way or the other.…So, set one way, it's a one, and the other way it's a zero.…However, it really isn't exactly…all the way ON or all the way OFF,…
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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