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CHP. 4 BASIC EDITING TECHNIQUES
119
Working with command markers
Command markers add interactivity to a multimedia presentation streamed over the Internet by inserting
metadata into streaming media files. As your video plays, any number of other actions can be programmed to
occur. These commands are a part of the Microsoft® Windows Media® and RealMedia® streaming formats.
Most frequently, these actions add text or open a related Web site where the viewer can find more
information about the topic at hand. The specific commands available vary depending on the final format of
your project.
Note:
Windows Media Player 9 will ignore metadata
commands unless the
Run script commands when present
check box is selected on the
Security tab of the player's
Preferences dialog. Be sure to instruct your audience to select
this check box before playing your file.
You can use command markers to add closed captions to your project. For more information, see Adding closed
captioning to Windows Media Video (WMV) files on page 229.
Command markers can also indicate when an instruction (function) will occur in a WAV file being used in
a radio broadcast environment (Scott Studios data). The following two sections define the markers for both
streaming media and Scott Studios files.
Note:
While streaming media files can be played on any
hard drive or CD-ROM, they require a special streaming
media server (provided by your Internet service provider) to
stream properly across the Internet.