File formats L9
Types of Text File Format
DOC/DOCX RTF TXT HTML PDF ZIP
Types of file formarring
Imag file format Audio file format video file format text format
file format
is a standard that information encoded for storge in a computer file
File formats
may be either proprietary or free and may be either unpublished or open.
MPEG/Stands for Motion Picture Experts Group/It use the filename extensions of .mpg or .mpeg The latest MPEG version, MPEG4, uses the .mp4 filename extension
this files are also a common format for digital videos and movies
ZIP /ZIP files are compressed data files Files of ZIP format use the .zip filename extension
A popular shareware program called WinZip originally used this format At one time you needed to use WinZip to compress (zip) and uncompress (unzip) ZIP files, but many personal computers now recognize this file format and will unzip the files
Text Format
Files in the file format are files in which the bytes represent the text characters of a particular character set using a specific system to relate the binary numbers in the file to the text characters of the set.
File formats example
For example : image file format , audio file format , video file format and Text Formats etc.
types of image formats
GIF JPEG PNG
In this format case, the text plus formatting, page size and similar information are stored in a moderately complex encoding While the details of this encoding are freely available, the format is owned by Adobe and can be changed by them at any time, for any reason
Types of Video File Format
MPEG MOV AVI WMV REAL VIDEO SWF
Types of Audio File format
MPEG WAVE MIDI WMA AIFF AAC
DOC/DOCX
Microsoft's Word (word processing) software saves documents using the .doc filename extension These files contain special formatting codes that identify how the text with look ( bold, italic, color, typeface, etc.) as well as how the page lays out (margins, indentation, pagination, etc.)
SWF
Stands for Originally ShockWave Flash, now means Small Web Format SWF files use the .swf file extension It is a format for multimedia, vector graphics and ActionScript in the Adobe Flash environmen
WMV
Stands for Windows Media Video WMV file formats are propriety to Microsoft licensed products WMV are not widely recognized by non-Windows players Windows Media Video files use a .wmv filename extension Files stored in this format are intended to be played, not edited
Text Format
Such systems are called 'encodings' and become an issue when the file includes characters that are not in the standard ASCII set, such as characters in languages other than English
TXT
TXT documents only contain text Any computer can read a TXT file, but don't expect it to look pretty The Notepad text editor included with Windows defaults to creating TXT documents
MOV /Stands for QuickTime Movie/QuickTime movies use the .mov filename extension//.qt filename extension used as an alternative
The QuickTime video and movie file format was originally developed for the Apple Macintosh But it is now recognized by all personal computers
Text Format
The Text file format includes a number of different formatting strategies for text files in which data fields are structured in a regular pattern
The document can be viewed and printed on all major platforms, using free software provided by Adobe (or others) documents cannot be readily edited
AVI/Stands for Audio/Video Interleave /It uses the .avi filename extension
The video and movie file format was originally developed by Microsoft for Windows-based personal computers It is the nominal standard for personal computers using Windows
PDF/ Stands for Portable Document Format PDF files use a .pdf filename extension
These files are created using a software package from Adobe called Acrobat This software must be purchased and converts files created by other softwares, like Microsoft's Word, into a read-only PDF file
HTML
This format is freely available and controlled by a public-interest standards body The document can be viewed in any web browser It can be edited in a text editor by someone who knows HTML, or in any number of "rich text" editors, word processors, editors and so on
GIF Stands for Graphic Interchange Format.Extension is .gif
Uses lossless compression technique Supports 8 bit colors Supported by all browsers Suitable for text , artwork , icons and cartoons Large File Size
PNG Stands for Portable Network Graphics/Extension is .png
Uses lossless compression technique which supports 24-bits colors but not supported by all browsers Suitable for text , icons etc. Smaller File Size as compared to GIF and JPEG
JPEG Stands for Joint Photographic Experts Group /Extension is .jpg or .jpeg
Uses lossy compression technique Supports 24-bit colors Supported by all browser Suitable for photographs Smaller File Size as compared to GIF
RTF
While the text formatting options are as "rich" as those used by Word, \ files have limited page layout options For example, you cannot create columns, add page numbers, headers, or footers
Image file formats
are standardized means of organizing and storing digital images
Image Formats
bring different ways to overcome the problem of delivering an image with reduced file size and minimum download time
AIFF/Stands for Audio Integrated File Format/AIFF uses the .aiff file extension
can support music from the highest quality 48K recording through to lower quality recordings
RTF//These files use .rtf filename extensions//Stands for Rich Text Format
documents are designed to transfer documents between word processing software
WMA/Stands for Windows Media Audio/wma filename extension
file formats use a loss compression developed by Microsoft and is widely recognized by a variety of players and jukeboxes, like Winamp and Music Match Windows Media Audio files use a .
MIDI/Stands for Musical Instrument Digital Interface/They use .mid or .midi filename extensions
files are very small, but are not compressed A file is not a recording of music being played; it is a description of how to create the sound based on predefined sounds, like a 6-string guitar or pipe organ A 10KB (10,000 storage locations) file could easily hold more than a minute of music
SWF
files can contain animations or applets of varying degrees of interactivity and function Currently, functions are the dominant format for displaying "animated" vector graphics on the Web
HTML///Stands for HyperText Markup Language It use either .htm or .html filename extensions
files contain codes that browsers, like Internet Explorer or Safari, translate into Web pages The text, plus simple formatting, is stored in a simple encoding that is based on the plain text file format above, with plain text markup interspersed with the text
WAVE /Stands for Resource Interchange File Format Waveform/.wav filename extensions
files employ an uncompressed audio format This file format is a proprietary format that was sponsored jointly by Microsoft and IBM The .this format can support both monaural (single-channel) and stereo (multichannel) audio One minute of stereo music takes up approximately 10MB of storage space
Audio File Format
is a file format for storing digital audio data on a computer system. This data can be stored uncompressed, or compressed to reduce the file size. It can be a raw bit stream, but it is usually a container format or an audio data format with defined storage layer
RealVideo
is a proprietary file format It uses .rm, .ram, .ra as file extensionsامتداده Used mainly for real-time streaming of audio and video it requires RealPlayer (Windows and Mac) software
Video File Format
is consist of two ways: Analog Digital Examples of these formats is: MPEG MOV AVI WMV Real Video SWF
AIFF/Stands for Audio Integrated File Format/AIFF uses the .aiff file extension
is the native audio file format developed by Apple for the Macintosh computer platform It is an uncompressed audio format This means that it is much larger in file size than MP3 but can support the highest possible audio recording quality as well as lower quality settings
AAC/Stands for Advanced Audio Coding /It uses the .aac file extension
it is a standardized loss compression Intended to be the successor to MP3 format, it is generally has better audio quality and is the default format for many digital audio players like the iPod, iPhone, iPad, Nintendo DS and others
image file format
may store data in uncompressed, compressed, or vector formats. Once rasterized, an image becomes a grid of pixels, each of which has a number of bits to designate its color equal to the color depth of the device displaying it.
file format
specifies how bits are used to encode information in a digital storage medium.
ZIP
this files can contain several compressed files under one filename, called an archive, when using the WinZip software As a result you could unzip a file (archive) named testbank.zip and find it contains 12 unique files for a 12-chapter textbook
MPEG /Stands for Moving Picture Experts Group
this files employ loss data compression this files use the .mp3 filename extension Digital music , pod casts and audio books are often saved as MPEG3 files One minute of music takes up approximately 1MB of storage space