ease-all-keyframes #code_aeft

ease-all-keyframes.jsx

// Gets all properties with keyframes in a layer
function getPropsWithKeys(layer) {
    var numRootProps = layer.numProperties;
    var propsWithKeys = [];
    for (var i = 0; i < numRootProps; i++) {
        var prop = layer(i + 1);
        var isGroup = prop.numProperties && prop.numProperties > 0;
        if (isGroup) {
            for (var j = 0; j < prop.numProperties; j++) {
                var subProp = prop.property(j + 1);
                var isSubGroup =
                    subProp.numProperties && subProp.numProperties > 0;
                if (isSubGroup) {
                    for (var k = 0; k < subProp.numProperties; k++) {
                        var subSubProp = subProp.property(k + 1);
                        if (subSubProp.numKeys > 0) {
                            propsWithKeys.push(subSubProp);
                        }
                    }
                } else {
                    if (subProp.numKeys > 0) {
                        propsWithKeys.push(subProp);
                    }
                }
            }
        } else {
            if (prop.numKeys > 0) {
                propsWithKeys.push(prop);
            }
        }
    }
    return propsWithKeys;
}
// Loop through and apply Custom Easing to all keyframes
var keyedProps = getPropsWithKeys(app.project.activeItem.layers[1]);
for (var i = 0; i < keyedProps.length; i++) {
    var curProp = keyedProps[i];
    var numKeys = curProp.numKeys;
    for (var j = 0; j < numKeys; j++) {
        var curKeyIndex = j + 1;
        var easeIn = new KeyframeEase(0.5, 50);
        var easeOut = new KeyframeEase(0.75, 85);
        var easeDimensions = curProp.keyOutTemporalEase(curKeyIndex).length;
        if(easeDimensions === 1)
            curProp.setTemporalEaseAtKey(curKeyIndex, [easeIn], [easeOut]);
        else if(easeDimensions === 2)
            curProp.setTemporalEaseAtKey(curKeyIndex, [easeIn, easeIn], [easeOut, easeOut]);
        else if(easeDimensions === 3)
            curProp.setTemporalEaseAtKey(curKeyIndex, [easeIn, easeIn, easeIn], [easeOut, easeOut, easeOut]);
    }
}