gistfile1.js

$f("", {},
{
    clip: {
        onMetaData: function(c) {
            var fd = c.duration;
            //create a cue point for 25, 50 and 75% of player progress
            var cues = [
            {
                time: fd * .25 * c.cuepointMultiplier,
                name: "25%"
            },
            {
                time: fd * .5 * c.cuepointMultiplier,
                name: "50%"
            },
            {
                time: fd * .75 * c.cuepointMultiplier,
                name: "75%"
            }
            ];

            c.onCuepoint(
                // each integer represents milliseconds in the timeline cues,
                // this function is triggered when a cuepoint is reached
                function(clip, cuepoint) {
                    console.log("progress : " + cuepoint.name);
                }
            );
        }
    }
});