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Anywave Communication Technologies
Vivace MPEG2 Encoder User Manual
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5.5
Advanced Parameter Options
The advanced parameter options can be set by selecting the bl
ue “advanced options” for
each type (Video, Audio, Transport). Below is shown with all of these options opened.
5.5.1
Advanced Video Options
# B frames : The default setting is 2. Allowed settings are 0,1 or 2. In general, the
higher setting will result in increased compression, and the video quality is improved for
a given bit rate.
GOP Length: The distance in frames between Intra frames. Typical value is 30 or 60.
In general, the higher values provided better compression.
Closed Captions: When On, captions are included in the encoder output if the CVBS or
SDI source signal has caption information.
Input Cropping. When enabled a cropping window selection is available. Each entry
provides cropping offset from Top and Left of the video frame.