def formatFrameToTime(start, current, frameRate):
    total = current - start
    seconds = float(total) / float(frameRate)
    minutes = int(seconds / 60.0)
    seconds -= minutes * 60

    return ":".join(["00", str(minutes).zfill(2),
                     str(round(seconds, 1)).zfill(2),
                     str(int(current)).zfill(2)])