آموزش مبانی رسانه دیجیتال

Digital Media Foundations

This course is for anybody curious about the mechanics behind the media seen on devices. If youre a self-trained designer, photographer, CG artist, audio mixer, video editor, or motion graphics artist, you have a good grounding in the tools you use, and you know the results you want, but you might not know how the technology youre using really works.

Its a transformational moment when you gain a deeper understanding of the way digital images, graphics, video, and audio work. Every day youre adjusting pixels and sound waves that have been captured, created, or rendered digitally.

Grasping what is really happening when you work with digital media allows you to improve your skills faster, communicate effectively, and collaborate more easily. Get ready to remove the mystery behind terms youve 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, youll 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.

Contents :

Introductory Thoughts
Welcome
What you should know before you begin
The journey light takes from subject to screen
What is a pixel?
1. How Do Computers Think?
Binary, the language of computers
Why do computers like binary?
How 1s and 0s make larger numbers
2. How Cameras and Computers Think about Color
How bright is fully bright?
Breaking it down into bit depth
How bit depth mixes with color channels
What’s the difference between 8 bit, 10 bit, 12 bit, and beyond?
Understanding depth of field
What difference does shooting stereoscopic 3D make?
3. The Language of Color
What are color modes?
Computer screens like RGB
Cameras and TVs like YUV
Comparing RGB and YUV
Printers prefer CMYK
All about alpha: Adding transparency
Masking areas of the picture with chroma key and luma key
Reducing the burden with color subsampling
High dynamic range: The biggest thing since color
What are legal levels?
Merging images with blend modes
4. The Shape of Your Picture and the Speed of Your Video
Pixel aspect ratios: Pixels have a shape too
What is a frame and a field?
Frame sizes, large and small
Frame rates, fast and slow
Measuring time with timecode
Why do we use drop frame timecode?
Showing frames on screens with their own refresh rates
5. Storing Everything (Codecs)
What is a codec?
Small file, big picture: What is video compression?
How much data is enough data?
What matters most when storing color, light, and sound
Delivery specifications: Working out how to deliver video and sound
What’s in a file format?: Understanding .mov, .mxf, and more
The magic of vector graphics
6. Color Wheels, Vectorscopes, and Waveforms
What do color wheels actually show you?
Getting to grips with a vectorscope
Understanding waveforms
Getting a little more detail with an RGB Parade
Seeing an overview of the color and light with a histogram
7. Making Changes
Natural adjustments made with color wheels
Precision adjustments made with Curves
Expanding (and compressing) the luma range with Levels
Selecting exactly the tone you want with Color Pickers
8. Audio Made Simple
Creating space with channels
Measuring the power of your sound with amplitude
Capturing tone as frequency
It’s all in the timing, or rather, the phase
Conclusion
Goodbye