Reference
JPEG
Abbreviation for “Joint Photographic
Experts Group.”
●Video
The types of video formats and their characteristics are summarized below.
File type
Extension
MPEG
.mpg
Reference
GIF
Abbreviation for “Graphics Interchange
Format.”
Characteristics
A file format for compressing and storing video. It is an
international standard data format for color video and audio. There are three different MPEG formats.
MPEG-1
Used for CDs (Video-CD), DAT, hard disks,
and other media that have a data transfer
speed of around 1.5 Mbps. Data is compressed and decompressed by software. Image quality is comparable to VHS videos.
MPEG-2
Used for DVDs (DVD-Video), digital satellite
broadcasts, etc. that have a data transfer
speed of several Mbps to several dozens of
Mbps. Data is compressed and decompressed by hardware. Image quality is comparable to HDTV.
MPEG-4
Used for mobile communication devices
(such as mobile phones), video conferencing
systems, etc. that have a data transfer speed
of several kbps to several dozens of kbps.
Reference
PNG
Abbreviation for “Portable Network
Graphics.”
Reference
Capture card
A “capture card” is an extension card
that can import video signals from
VCRs and other devices, and convert
them into digital data (video) that can
be viewed on a computer.
Reference
MPEG
SWF
.swf
The video file format created by Macromedia’s ( now
Adobe Systems) Flash software. Widely used on the Internet for animated video files. A plugin (Adobe Flash
Player) is required to playback video.
AVI
.avi
A standard composite file format for videos and audio
used on Windows. Software called “CODEC” that supports the various video and audio compression formats
is required to play AVI files.
QuickTime
.mov
A video file format created by Apple.
Widely used not only on Macintosh, but also Windows
computers. These files provide simultaneous support for
various compression and decompression systems not
only for audio and video, but also for text.
Abbreviation for “Moving Picture Experts Group.”
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