Common Text File Format
Common Text File Format
Extension
File Description
.doc
Microsoft Word Document
.docx
Microsoft Word Open XML Document
.log
Log File
.msg
Outlook Mail Message
.rtf
Rich Text Format File
.txt
Plain Text File
.wpd
WordPerfect Document
.wps
Microsoft Works Word Processor Document
.doc
Microsoft Word Document
Common Text File Format
Common Audio File Format
Common Audio File Format
Extension
File Description
.aac
Advanced Audio Coding File
.aif
Audio Interchange File Format
.m3u
Media Playlist File
.mid
MIDI File
.mp3
MP3 Audio File
.mpa
MPEG-2 Audio File
.ra
Real Audio File
.wav
WAVE Audio File
.wma
Windows Media Audio File
Common Audio File Format
Common Image File Format
Common Image File Format
Extension
File Description
.bmp
Bitmap Image File
.gif
Graphical Interchange Format File
.jpg
JPEG Image File
.png
Portable Network Graphic
.psd
Adobe Photoshop Document
.tif
Tagged Image File
Common Image File Format

BMP(Bitmap Image File)
 refers to the standard Windows image format
 unsuitable for use in a high-end print production
workflow
 only supports the RGB color space and bit depths
of 1, 4, 8, or 24 bits per channel
 Advantage: simplicity and wide acceptance in
Windows programs
 Disadvantage: File size is large (uncompressed)
Common Image File Format

GIF(Graphical Interchange Format File)
 introduced by CompuServe in 1987
 supports animation
 widely used in online and web applications
 either be in grayscale or RGB color spaces
 Advantage: uses a lossless compression (effective
when large areas have a single color)
 Disadvantage: ineffective for detailed images
Common Image File Format
Common Image File Format

JPG/JPEG (Joint Photographic Experts Group)

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Developed by Joint Photographic Experts
Group
The standard algorithm for the compression of
digital images.
The JPEG standard also allows, but does not
require decoders to support
Supported by the multimedia device (digital
cameras and other photographic image
capture devices etc.).
Common Image File Format

PNG (Portable Network Graphic)

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Developed by Internet Engineering Steering
Group
PNG was created to improve upon and replace
GIF (Graphics Interchange Format) as an
image-file format not requiring a patent license.
PNG uses a 2-stage compression process:
pre-compression: filtering (prediction)
compression: DEFLATE
Supported by the multimedia device (digital
cameras and other photographic image
capture devices etc.).
Common Image File Format
Common Video File Format
Common Video File Format
Extension
File Description
.asf
Advanced Systems Format File
.asx
Microsoft ASF Redirector File
.avi
Audio Video Interleave File
.flv
Flash Video File
.mov
Apple QuickTime Movie
.mp4
MPEG-4 Video File
.mpg
MPEG Video File
.rm
Real Media File
.swf
Flash Movie
.vob
DVD Video Object File
.wmv
Windows Media Video File
Common Video File Format
Common Video File Format

AVI (Audio Video Interleave)

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Developed by Microsoft
Audio or video content can be compressed with a
wide variety of video or audio and video codecs
Supported by the multimedia device (DVD players,
portable players etc.).
MPEG (Moving Picture Experts Group)


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Developed by Moving Picture Experts Group.
MPEG is an ISO standard used by many multimedia
devices
Supported by the multimedia device(DVD players,
Blu-RAY, portable players, computers).
Common Video File Format
Common Video File Format

VOB

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
a DVD Video object file.
Support video and audio streaming
Support selection of subtitles and any other DVD
menu features.
Uses the MPEG-2 compression.
MP4



The MPEG-4 file format, as defined by the
MPEG-4 specification
MPEG-4 multimedia file format
Based on ISO standard MPEG-4.
Common Video File Format
Common Video File Format
 MOV


An Apple QuickTime multimedia container
format
Can store one or more tracks of data such
as video, audio, text, and effects.
 3GP

(Third Generation Partnership Project)
A standard for the creation, delivery and
playback of multimedia over 3rd
generation, high-speed wireless networks.