Grass Valley ProCoder 3 - Manual (Page 199)

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ProCoder 3
W
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Using ProCoder
Helpful Hints
ProCoder Reference
Glossary
Index
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Glossary
Data Rate
The amount of data that is used in the video. Data rate is usually represented in
thousands of bits per second or kilobits per second (kbps), however, it can also
be represented in other units such as megabytes per second (MB/sec). Bitrate is a
particular measurement of data rate.
DivX
A popular video compression method used for a wide range of purposes including
Web video and High Definition video storage and playback. DivX uses MPEG-4
technology to achieve low bitrates and small file sizes.
DV
In general use, stands for digital video, meaning any digital representation of video.
However, more recently it refers to the Consumer DV format which is a video
compression format used in miniDV camcorders. In ProCoder, DV refers to the
Consumer DV format.
DVD
Popular format for storing and delivery high-quality video. DVDs use MPEG-2 video
to provide broadcast-quality playback, as well as interactivity such as menus and
chapter-points. DVDs can be played on set-top DVD players, as well as computers
with a DVD-ROM drive and appropriate software.
Frame Rate
The number of video frames shown per second. In general, the higher the frame rate,
the smoother the playback.
Frame Size
Refers to the pixel size of your converted video. You’ll encounter a frame size option
when you try to create CD-ROM or HD video. For CD-ROM video, 320x240 is half
the size vertically and horizontally of full-screen video (640x480). For HD video,
resolutions are much higher so your options are 1920x1080 interlaced for 1080i, and
1280x720 for 720p.
MPEG
Short for Motion Picture Experts Group, the MPEG video format was created to
provide a standard for compressing large-sized digital video files into a smaller size.
MPEG-1 was intended for video delivered on CD-ROM, but can also be used for Web
delivery. MPEG-2 is a broadcast-quality video format that is used for DVDs and digital
television.
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