If you're producing content for the web, it won't matter all that much how bright or dark the image is—at least not in technical terms. If it looks right, it's probably fine. That said, if you're producing content for broadcast television, you're going to deliver media to exacting standards set by the ITUC, an organization that works with broadcasters and television manufacturers to establish norms for the signals that are transmitted and received. Learn more in this video.
- [Voiceover] When video is broadcast,…there are limits to how bright an image can be,…and for that matter, a minimum level of brightness.…In real terms, we're talking about…the intensity of the signal.…But for the purposes of producing video,…we're working with upper and lower limits…that we'll see in a waveform monitor.…And I'll talk about these in a later lesson.…There are lots and lots of standards set by the ITU,…who are an international organization…set up to define these things.…The rules for Internet-Delivered Video are very broad.…
If it looks okay on your computer monitor,…it'll probably look okay on everyone else's,…though you'll definitely want to check with other devices…like phones and tablets.…For Broadcast Television Delivery,…there are three standards worth keeping an eye on:…601, 709, and 2020.…And these are sometimes referred to as…Rec.601, or ITU 601, or just 601, and so on.…It's not very catchy as a set of names,…but thankfully these are easier to work with…than the technical name might suggest.…
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.
- 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 Garrott20m 37s 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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