每次用户访问网页时都会播放视频？

Question

I have created a splash-video which is played when a visitor visits the page for the first time. With a cookie I can set an expiration time when this splash-video will popup again. What I'd like to achive instead is when this splash-video is played on first visit it will only display again on next visit (when user closes the tab or closes the web browser window).

What I have read while searching, if I don't set an cookie expiration this should work.

setcookie( 'my_cookie', 1 );

The problem is that if user in for example Chrome have settings set to "On Start -> Continue where you left off", this behaviuor won't work.

Is there really a bullet-proof way of achieving what I want?

Kind regards Johan

UPDATE:

This seems to work fine. Any comments on that?

<script type="text/javascript">
if (/(^|;)\s*bvssp_visited=/.test(document.cookie)) {
    document.getElementById("demo").innerHTML = "welcome back";
    var myVar=setInterval(function(){document.cookie = "bvssp_visited=true; max-age=" + 10 * 1},1000);
} else {
    var myVar=setInterval(function(){document.cookie = "bvssp_visited=true; max-age=" + 10 * 1},1000);
    document.getElementById("demo").innerHTML = "Hi new user";
}
</script>