User Guide

FLVPlayback class 663

Description

Method; seeks to next navigation cue point, based on the current value of the playheadTime

property. The method skips navigation cue points that have been disabled and goes to the end

of the FLV file if there is no other cue point.

For several reasons, the

playheadTime property might not have the expected value

immediately after calling one of the seek methods or setting

playheadTime to cause seeking.

First, for a progressive download, you can seek only to a keyframe, so a seek takes you to the

time of the first keyframe after the specified time. (When streaming, a seek always goes to the

precise specified time even if the source FLV file doesn’t have a keyframe there.) Second,

seeking is asynchronous, so if you call a seek method or set the

playheadTime property,

playheadTime does not update immediately. To obtain the time after the seek is complete,

listen for the

seek event, which does not start until the playheadTime property has updated.

Example

The following example seeks to the next navigation cue point when the cue point named

point2 occurs. This has the effect of skipping that portion of the FLV file between the cue

points named point2 and point3.

Drag an FLVPlayback component to the Stage, and give it an instance name of

my_FLVPlybk. Then add the following code to the Actions panel on Frame 1 of the

Timeline:

/**

Requires:

- FLVPlayback component on the Stage with an instance name of my_FLVPlybk

import mx.video.*;

var listenerObject:Object = new Object();

listenerObject.cuePoint = function(eventObject:Object) {

if(eventObject.info.name == "point2")

my_FLVPlybk.seekToNextNavCuePoint(eventObject.info.time);

}

my_FLVPlybk.addEventListener("cuePoint", listenerObject);

my_FLVPlybk.contentPath = "http://www.helpexamples.com/flash/video/

cuepoints.flv";