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Use video cue points to allow events to be triggered at specific
times in the video. There are two kinds of cue points that you can
work with in Flash:
Encoded cue points. These are cue points you add when
encoding video with Adobe Media Encoder. For more information about
adding cue points in Adobe Media Encoder, see Using Adobe Media Encoder. Encoded
cue points can be accessed by other applications in addition to
Flash.
ActionScript cue points. These are cue points you add to
a video with the Property inspector in Flash. ActionScript cue points
are accessible only to Flash and Flash Player. For more information
about ActionScript cue points, see Understanding Cue Points in the ActionScript 3.0 Developer’s Guide.
When an FLVPlayback component instance is selected on the Stage,
the video cue points list appears in the Property inspector. You
can also preview the entire video on the Stage and add ActionScript
cue points using the Property inspector while previewing the video,
including videos served by Flash Media Server.
A video tutorial about working with video cue points is available
at www.adobe.com/go/lrvid5302_fl_en.
To work with cue points in the Property inspector:
Import video as progressive download, or place the FLVPlayback
component on the stage and specify the source video. You can specify
the source video in the Property inspector.
In the Property inspector, click Cue Points to expand the
section, if it's not already open.
Click the Add button (+) to add an ActionScript cue point,
and the Delete button (-) to delete an existing cue point. You can
specify the time by dragging the mouse right or left to increase
or decrease the timecode value, or by typing in a value.
To add a parameter to a cue point, select the ActionScript
cue point and click the Add button (+) at the bottom of Parameters
section.
You can rename the ActionScript cue points and any parameters
by clicking in the name field and editing the name.
You can import and export lists of cue point from within the
Property inspector. Only ActionScript cue points can be imported
to avoid conflicts with cue points that have already been embedded
inside the video during encoding.
The Import and Export cue point buttons at the top of Cue Points
section allow you to import or export cue point lists in XML format.
When exporting, the list includes all Navigation and Event cue points
which are embedded in the video, along with all ActionScript cue
points you have added. When importing, a dialog showing the number
of ActionScript cue points imported is displayed.
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