Though many of the settings you'll choose when recording or delivering video are set in advance, it's likely you will need to make a decision about the data rate. Understanding the way data is used to manage visual and auditory information is hugely beneficial when making decisions about media delivery, particularly for the web. This video explains the way varying data rates can impact the qualify of your video, so you can better judge the settings to use.
- The famous phrase " a picture paints a thousand words"…has particular relevance when thinking about the way video…and sound information is stored.…This kind of media isn't a single image displayed…with a particular file size.…The total amount of data used…to store it is spread over time.…The more data used to store picture information,…the better the quality of the image…up to a maximum amount of data, where there just…isn't anymore image to store.…Think of the amount of data used as sheets of paper.…Imagine being asked to write a detailed description…of a landscaped image but you only have one sheet…of paper to use with a fixed layout.…
Every extra page you have to write your description…allows you to add more detail.…However, each page takes more time and effort to write…and the paper takes more space to store.…If you are given an unlimited supply of paper,…time and energy, you'd still reach a point eventually…where you simply had nothing left to write.…Everything you could possibly think about writing…has been written and you feel pretty sure every imaginable…
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 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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