Import and Delete Tracks from a Clip

C#
IMediaMgr mediaMgr = iappServer.CreateMediaMgr(appName);

// define clip to modify and imported WAV clip
string clip = "edl/cmf//local/V:/default/Clip";
string wavClip = "edl/cmf//local/V:/default/wavClip";

// Note: this test app is using an imported clip named "wavClip". If you wanted to import a temporary clip that 
// you did not want to appear in AppCenter's list of clips, you could import a clip and give it a name that starts 
// with a tilde (~). All clips starting with tilde's are treated as temporary clips. They will not appear in AppCenter's
// list of clips and they will automatically be deleted after a little while...

// get editors for both clips
ISimpleEditor wavEditor = (ISimpleEditor) mediaMgr.CreateEditor(wavClip);
ISimpleEditor clipEditor = (ISimpleEditor) mediaMgr.CreateEditor(clip);
ITrackEditor clipTrackEditor = (ITrackEditor) clipEditor;

// get the XML representation of the WAV clip
string wavXml;
wavEditor.GetXml("", out wavXml);
// Console.WriteLine(wavXml);
 
// we're finished with wavEditor, so get rid of the editor and clean up
wavEditor.Detach();
wavEditor.Dispose();


// load the XML string into an XML document so we can parse for Tracks
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(wavXml);

// load the namespace into a namespace manager. used for parsing the xml doc
XmlNamespaceManager namespaceManager = new XmlNamespaceManager(xmlDoc.NameTable);
namespaceManager.AddNamespace("ns", @"PdrDB__1.0");

// loop thru all tracks and look for audio tracks only (i.e TrackType="PdrAudioTrack". Uncomment the above 
// Console.WriteLine(wavXml) to see all XML data including other TrackTypes.)
XmlNodeList trackList = xmlDoc.SelectNodes(("//ns:XML/ns:Data/ns:Movie/ns:Track"), namespaceManager);

// if our clip has tracks, loop thru all tracks
if (trackList.Count > 0)
{
	// setup enumerator for loop
	IEnumerator trackNodeEnum = trackList.GetEnumerator();
	bool bMoreTracks = trackNodeEnum.MoveNext();

	do
	{
		// Get the TrackType, TrackNumber, and TrackId attribues from the Track node
		XmlNode trackNode = (XmlNode)trackNodeEnum.Current;
		string trackType = trackNode.Attributes.GetNamedItem("TrackType").Value;
		int trackNumber = Int32.Parse ( trackNode.Attributes.GetNamedItem("TrackNumber").Value );
		string trackId = trackNode.Attributes.GetNamedItem("TrackId").Value;

		// if we found a "PdrAudioTrack, add it to the Clip
		if ( 0 == String.Compare( trackType, "PdrAudioTrack", true) )
		{
			Console.WriteLine("Track type: {0}  number: {1}  ID: {2}", trackType, trackNumber, trackId);

			// add WAV audio track to Clip
			int addedTrackIndex;
			string addedTrackId;
			
			clipTrackEditor.AddTrack(wavClip, trackId, Int32.MinValue, Int32.MaxValue, 
				0, out addedTrackIndex, out addedTrackId);

			Console.WriteLine("Added track index: {0}  ID: {1}", addedTrackIndex, addedTrackId);
			
			
			// Let's also setup a label for this track. You can see these in AppCenter in clip properties page under the Tracks button.
			string label = "xyz";
			Console.WriteLine("Set track {0} label to '{1}'", addedTrackId, label);
			clipTrackEditor.SetTrackLabel(addedTrackId, label);

			
			/*   uncomment to test
			// delete tracks from Clip
			Console.WriteLine("Delete track {0}", addedTrackId);
			clipTrackEditor.DeleteTrack(addedTrackId);
			*/

			/*   uncomment to test
			// Add blank/empty tracks to Clip, available in 7.2 Summit Code
			// 1. Add a video track
			clipTrackEditor.AddTrack("", "PdrVideoTrack", 0, 0, 0, out addedTrackIndex, out addedTrackId);
			Console.WriteLine("Added blank video track {0}", addedTrackId);
			// 2. Add an audio track
			clipTrackEditor.AddTrack("", "PdrAudioTrack", 0, 0, 0, out addedTrackIndex, out addedTrackId);
			Console.WriteLine("Added blank audio track {0}", addedTrackId);
			// 3. Add a timecode track
			clipTrackEditor.AddTrack("", "PdrTimeCodeTrack", 0, 0, 0, out addedTrackIndex, out addedTrackId);
			Console.WriteLine("Added blank timecode track {0}", addedTrackId);
			*/
			
			/*   uncomment to test
			// move track position in Clip
			int position = 0;
			Console.WriteLine("Move track {0} to position {1}", addedTrackId, position);
			clipTrackEditor.MoveTrack(addedTrackId, position);										
			*/
			
			Console.WriteLine();									
		}

		bMoreTracks = trackNodeEnum.MoveNext();
	} while (bMoreTracks);
	
} // if trackList.Count > 0							

// cleanup - make sure you detach or movie ref will remain open!
clipEditor.Detach();
clipEditor.Dispose();
clipEditor = null;

mediaMgr.Dispose();