User guide

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Chapter 9, Using Matrox MediaExport
Customizing your target audience settings
Customizing your target audience settings for RealMedia and Windows Media
files, such as bit rate, frame rate, and key frame interval, lets you create video
streams that are optimized for delivery over specific types of Internet
connections. You can create multiple bit rate video files by adding one or more
target audiences to a single bit rate encoding profile.
°To modify your target audience settings:
1 Click the Tar g e t Au d ie n c es tab.
¦NoteIf you’re modifying a multiple bit rate profile, check boxes for several
target audiences will be selected. An individual video stream will be encoded
for each selected target audience to create a multiple bit rate video file. You
can change the settings for each of these target audiences.
2 From the list of target audiences, select (highlight) the target audience whose
settings you want to change.
3 Change the Bit Rate, Frame Rate, and Key Frame Interval as needed.
¥Tip You can also change the frame rate by typing the value in the session
window under the
Frame Rate heading. When you modify the frame rate of
an encoding profile from the session window, the new frame rate will apply
to all of the profile’s target audiences.
4 If you’re modifying a RealMedia encoding profile, you can select the
following options:
$ Variable bit rate encoding Select this to allow your video to be
streamed at varying bit rates that correspond to the complexity of its content.