Matrox MXO2 Installation And User Manual page 124

106
¦ Note
the options described in this section may not apply.
Under Motion , select the frame rate for your captured video in Frames per
1
second
¦ Note
(36621 KB/s) for SD material, and 50 Mb/s (6100 KB/s) and 300 Mb/s for
HD material.
To apply advanced compression settings, set the options under Compressor .
2
The default settings for the advanced options provide good results for most
applications. We recommend that you change these settings only when
needed for special purposes.
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Chapter 9, Using Matrox MXO2 with Supported Programs
If you're using the Matrox MPEG-2 I-frame codec for playback, some of
, and enter a target data rate in the Limit data rate to box.
The data rate must be between 10 Mb/s (975 KB/s) and 300 Mb/s
Select your desired Scan pattern :
Sets the regular zig zag scanning pattern of the AC
Regular
•
coefficient of the DCT block as defined in the ISO/IEC 13818-2 (figure
7-2) specification document.
Alternate Sets the alternate zig zag scanning pattern of the AC
•
coefficient of the DCT block as defined in the ISO/IEC 13818-2 (figure
7-3) specification document. Use this setting when capturing video at a
high data rate.
Select your desired Rounding type :
MPEG-2 Rounds the AC coefficient up to the nearest whole number
•
when calculating the quantization coefficient.