7.1

Table Of Contents
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Chapter 17 Export
Export MPEG-1, -2, -4
Click Modify Preset to open the Edit Presets dialog box. This dialog box contains three tabs - General
(information on the preset), Video and Audio - whose parameters are described below.
Video Parameters
Width by Height
Specified in pixels. Note the values permitted for the selected format standard.
Interlacing (not available for MPEG-1)
Select the field sequence, or Progressive for fullscreen mode.
Frames Per Second
Can be specified to up to two decimal places for drop-frame formats.
Average Bitrate
For MPEG formats that work with variable bit rates, specify an average value. Upper limits, when
required by the video content, are defined in the next parameter.
Specified in bits per second (8,000,000 = 8 Megabits/second).
Maximum Bitrate/Peak
Highest permissible bit rate for encoding.
Bitrate Control VBR/CBR
VBR stands for variable bit rate (you must specify an average and maximum bit rate value).
CBR stands for constant bit rate. In this case you only need to define the maximum value.
See also “Bitrate and Bitrate Control (VBR/CBR) on page 970.
GOP Size
See “GOP size” on page 971.
Closed GOP
See “Closed GOPon page 971.
Encoding Quality (MPEG-4 only)
The maximum value is 100 (percent).