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markervalue

MarkerValue object

new MarkerValue(comment, chapter, url, frameTarget, cuePointName, params)

Description

The MarkerValue object represents a layer or composition marker, which associates a comment, and optionally a chapter reference point, Web-page link, or Flash Video cue point with a particular point in a layer.

Create it with the constructor; all arguments except comment are optional.

All arguments are strings that set in the corresponding attributes of the returned MarkerValue object, except params; this is an array containing key-value pairs, which can then be accessed with the getParameters() and setParameters() methods.

A script can set any number of parameter pairs; the order does not reflect the order displayed in the application.

To associate a marker with a layer, set the MarkerValue object in the Layer.marker property of the layer: layerObject.property("Marker").setValueAtTime(time, markerValueObject);

To associate a marker with a composition, set the MarkerValue object in the CompItem.markerProperty property of the comp: compObject.markerProperty.setValueAtTime(time, markerValueObject);

For information on the usage of markers see “Using markers” in After Effects Help.

Examples

  • To set a layer marker that says “Fade Up” at the 2 second mark:

    var myMarker = new MarkerValue("FadeUp");
    myLayer.property("Marker").setValueAtTime(2, myMarker);
    // or
    myLayer.marker.setValueAtTime(2, myMarker);

  • To set a comp marker that says “Fade Up” at the 2 second mark:

    var myMarker = new MarkerValue("FadeUp");
    comp.markerProperty.setValueAtTime(2, myMarker);

  • To get comment values from a particular marker:

    var layer = app.project.item(1).layer(1);
    var markerProperty = layer.marker;
    

    var commentOfFirstMarker = markerProperty.keyValue(1).comment;
    

    // or
    var commentOfMarkerAtTime4 = markerProperty.valueAtTime(4.0, true).comment;
    

    // or
    var markerValueAtTimeClosestToTime4 = markerProperty.keyValue(markerProperty.nearestKeyIndex(4.0));
    var commentOfMarkerClosestToTime4 = markerValueAtTimeClosestToTime4.comment;

Attributes

MarkerValue.chapter

app.project.item(index).layer(index).property("Marker").keyValue(index).chapter

Description

A text chapter link for this marker. Chapter links initiate a jump to a chapter in a QuickTime movie or in other formats that support chapter marks.

Type

String; read/write.

MarkerValue.comment

app.project.item(index).layer(index).property("Marker").keyValue(index).comment

Description

A text comment for this marker. This comment appears in the Timeline panel next to the layer marker.

Type

String; read/write.

MarkerValue.cuePointName

app.project.item(index).layer(index).property("Marker").keyValue(index).cuePointName

Description

The Flash Video cue point name, as shown in the Marker dialog box.

Type

String; read/write.

MarkerValue.duration

app.project.item(index).layer(index).property("Marker").keyValue(index).duration

Description

The marker’s duration, in seconds. The duration appears in the Timeline panel as a short bar extending from the marker location.

Type

Floating-point value; read/write.

MarkerValue.eventCuePoint

app.project.item(index).layer(index).property("Marker").keyValue(index).eventCuePoint

Description

When true, the FlashVideo cue point is for an event; otherwise, it is for navigation.

Type

Boolean; read/write.

MarkerValue.frameTarget

app.project.item(index).layer(index).property("Marker").keyValue(index).frameTarget

Description

A text frame target for this marker. Together with the URL value, this targets a specific frame within a Web page.

Type

String; read/write.

MarkerValue.url

app.project.item(index).layer(index).property("Marker").keyValue(index).url

Description

A URL for this marker. This URL is an automatic link to a Web page.

Type

String; read/write.

MarkerValue.label

app.project.item(index).layer(index).property("Marker").keyValue(index).label

Description

The label color for a composition or layer marker. Colors are represented by their number (0 for None, or 1 to 16 for one of the preset colors in the Labels preferences). Custom label colors cannot be set programmatically.

Available in After Effects 16.0 or later.

Type

Integer (0 to 16); read/write.

MarkerValue.protectedRegion

app.project.item(index).markerProperty.keyValue(index).protectedRegion

Description

State of the Protected Region option in the Composition Marker dialog box. When true, the composition marker behaves as a protected region. Will also return true for protected region markers on nested composition layers, but is otherwise not applicable to layer markers.

Available in After Effects 16.0 or later.

Type

Boolean; read/write.

Methods

MarkerValue.getParameters()

app.project.item(index).layer(index).property("Marker").keyValue(index).getParameters()

Description

Returns the key-value pairs for Flash Video cue-point parameters, for a cue point associated with this marker value.

Parameters

None.

Returns

An object with an attribute matching each parameter name, containing that parameter’s value.

MarkerValue.setParameters()

app.project.item(index).layer(index).property("Marker").keyValue(index).setParameters(keyValuePairs)

Description

Associates a set of key-value pairs for Flash Video cue-point parameters, for a cue point associated with this marker value. A cue point can have any number of parameters, but you can add only three through the user interface; use this method to add more than three parameters.

Parameters

ParameterTypeDescription
keyValuePairsKey-value pair objectObject containing the key-value pairs as attributes and values. The object’s toString() method is called to assign the string value of each attribute to the named key.

Returns

Nothing.

Example

var mv = new MarkerValue("MyMarker");
var parms = {};
parms.timeToBlink = 1;
parms.assignMe = "A string"
mv.setParameters(parms);
myLayer.property("Marker").setValueAtTime(2, mv);