Extend length of comp to match the longest layer

[Graham Quince]

Not used it myself, but maybe something like this tool would help:

https://aescripts.com/elastic-comp-changer/

[Walter Soyka]

I’m way late to the party, but this would make a useful script. Save this code as a .jsx file, and it will step through all selected comps, extending their duration to the latest out point of its layers.

var projectSelection = app.project.selection;
if (projectSelection.length == 0) {
    alert("Select one or more comps in the project panel.");
} else {
    app.beginUndoGroup("Extend selected comps to longest layer");
    writeLn("Extending selected comps to longest layer...");
    var processedCompsCount = 0;
    var modifiedCompsCount = 0;
    for (var i = 0; i < projectSelection.length; i++) {
        if (projectSelection[i] instanceof CompItem) {
            var modifiedComp = false;
            var currentComp = projectSelection[i];
            for (var j = 1; j <= currentComp.numLayers; j++) {
                if (currentComp.layer(j).outPoint > currentComp.duration) {
                    currentComp.duration = currentComp.layer(j).outPoint;
                    modifiedComp = true;
                }
            }
            processedCompsCount++;
            if (modifiedComp) { modifiedCompsCount++; }
        }
    }
    writeLn("Processed " + processedCompsCount + " comp" + (processedCompsCount == 1 ? "" : "s") + " and modified " + modifiedCompsCount + ".");
    app.endUndoGroup();    
}

[Xavier Paredes]

Hi Walter,

I wound up using Keyboard Maestro to automate the repetitiveness. But I will test your solution next time I have a similar project.

I really appreciate you posting this solution.

[Xavier Paredes]

UPDATE: I just tested it and works like a charm!