Lesson 10 - Digital media File formats. Many of this is older info, Fomats are changing so fast.
Many of these formats have changed over the years. Look to this link for the lastest in Digital media formats. http://en.wikipedia.org/wiki/Graphics_file_format_summary
This
lesson is an introduction to the different file formats
for digital media. It is very important to understand how
to save files. Digital media is all about multiple files
combined together to create a complete product. For example,
a interactive CD-ROM presentation could have artwork, sound,
animation, and video. Each of these pieces will be in different
files formats and all will need to work together.
Different
categories of file formats:
- Graphic
- this includes Bit map and Vector
- Text
- Sound
- Video
- Animation
Rules
to name files
1.
If you want your files to work properly between Macintosh
and Windows computers; always save your files in the 8.3
naming system. This is using 8 characters and number;
then the file format extension. In this section I will
explain each extension. Example; a graphic file for the
Internet could be named - myfile.gif
2.
Never use upper and lower case letters together. Example:
never name a file - Myfile.Gif
3.
Never use spaces in a name. Example: never name a file
- my file.gif
4.
Never use any keyboard characters other than letters
or numbers. Example: never use - + = \ / ? " ' , < > %
* & $ # @ ! you get the idea.
Any
file format can be sent through the Internet. It is the
World Wide Web and browers that can only display certain
file formats. In addition, there are plugins that can
be add to the browers that can allow more formats to
be displayed. In this section only a few plugins will
be explained.
| Type
of file |
Format |
Extension |
| Graphics |
1. GIF -
a graphic format with less than 256 colors, can have
transparent layer
2. JPEG - graphic format than can have millions of color,
It is highly compressed
3. PNG - can have up to millions+ colors, can include
transparent layer and gamma information. |
1.
.gif
2. .jpg
3. .png |
| Animation |
1. GIF
animation - an animation made out of a series
of gif images, can have a tranparent layer
2. DHTML - Dynamic HTML allows for a layer of information
to animate across web browers
3. SWF - Adobe Flash Format |
1.
.gif
2. .html, .htm
3. SWF
|
| Video |
1. Quicktime - Plugin -
most popular video format, many different compressions
2. Video for Windows - Plugin -microsoft video
format
3. Real - Plugin -very popular video format
4. MPEG - Plugin - Highly compressed format |
1.
.mov
2. .avi
3. ram, ra
4. .mpg |
| Sound |
1. Wave -
basic sound, uncompressed
2. AIF - basic sound, uncompressed
3. MP3 -Plugin - very popular, highly compressed,
CD quality sound
4. AU/ulaw - Sun computers, sound format
5. MIDI - very small file |
1.
.wav
2. .aif
3. .mp3
4. .au
5. .mid |
| Plugin
Things |
1. Flash - Plugin -vector
based animation and interactive format
|
1.
.swf
|
| Programming |
1. CGI -
web server and external programming scripts
2. CSS - controls appearance of web pages
3. ASP -
active Server Page
4. PHP - Most popular web programming language
There are many different programming
language and formats. Too many to mention here. |
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