Question using time tracks

[Astro-Xana]

Is there a way for me to move control points on a time track in a straight line (in units) rather than moving them by the mouse? Also, is there a way for me to duplicate a time track and its contents or select the contents of a time track, copy them, and paste them into another time track?

[steve]

Yes you can, but:
a) You have posted in the wrong part of the forum - Audacity 1.2.x does not support Time Tracks.
b) It requires direct editing of the Audacity Project (AUP) file, which is not recommended unless you have a thorough understanding of how they work (otherwise you are very likely to destroy your project).

Here is an AUP file that contains just one time track with 3 control points:

Code: Select all

<?xml version="1.0" standalone="no" ?>
<!DOCTYPE project PUBLIC "-//audacityproject-1.3.0//DTD//EN" "http://audacityteam.org/xml/audacityproject-1.3.0.dtd" >
<project xmlns="http://audacityteam.org/xml/" projname="time_data" version="1.3.0" audacityversion="1.3.5-beta" sel0="0.0000000000" sel1="0.0000000000" vpos="0" h="0.0000000000" zoom="86.1328125000" rate="44100">
	<tags>
		<tag name="id3v2" value="1"/>
	</tags>
	<timetrack name="Time Track" channel="2" offset="0.00000000">
		<envelope numpoints="3">
			<controlpoint t="1.335147392290" val="0.504249291785"/>
			<controlpoint t="3.053424036281" val="0.980169971671"/>
			<controlpoint t="4.272471655329" val="0.512747875354"/>
		</envelope>
	</timetrack>
</project>

As you can see, it is basically an XML file.
The <timetrack></timetrack> tags enclose the time track data which consists of three control points.
The first parameter of the control point is the position on the time line for the control point.
The second parameter is the value (vertical position) on a scale of 0 to 1.