The codec you use is a key decision when deciding how to capture, store, and replay video and audio files. Codecs are a simple concept that can easily become complex when choosing the finer details. Thankfully, there are presets to help you through some of the more subtle choices. This video explains exactly what a codec is, so you can choose wisely.
- [Instructor] CoDec is a shortening…of the words Compressor and Decompressor.…It sounds technical,…and the implementation of codecs…can be extremely complex,…but it's not that difficult to understand…the way they work, if you view them as languages.…A good codec is one that stores video or sound…in a small file, while retaining…a lot of the original picture quality.…The more you compress a media file,…and we literally mean making it a smaller file…to store, usually, the more the quality degrades.…
More on this in the lesson on video compression.…For you to store information in a particular codec,…you need to install it,…and codecs work a little like fonts.…You can install them easily, just as you would software.…And once they're installed,…any compatible software can use them.…For cameras, this process usually happens in the factory.…Once the media has been compressed,…usually into a smaller file,…it's a file like any other, and can be transferred…more quickly because it's usually smaller.…When you want to view media that's been compressed…
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 33s 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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