Finding Start Time of Footage

I'm trying to get the starting timecode of footage via scripting. The only way I can think of doing this is using the "New Comp from Selection" app.executeCommand to create a comp. Then I can use displayStartTime function on the new comp. Is there a smarter way to do this? I'd rather not use the app.executeCommand but I can't think of anything else. If there isn't a better way, could someone tell me why the script below isn't working? It does the first loop but after that the remaining loops don't execute fully. Thanks for the help!

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var selectedFootage = app.project.selection;

var footageComps = new Array();

var startTimes = new Array();

for (var i=0; i<selectedFootage.length; i++)

{

          // Deselect All

          app.executeCommand(2004);

          // Select Footage Item

          selectedFootage.selected = true;

          // New Comp From Selection

          app.executeCommand(2796);

          // Deselect Footage Item

          selectedFootage.selected = false;

          // Set footageComps Varible

          footageComps = app.project.activeItem;

          // Get Start Time

          startTimes = footageComps.displayStartTime;

          alert(startTimes);

}