Setting Cookies in browser for video autoplay

Question

How would I set cookies such that a video only plays automatically on the first visit only, afterwards if they want to watch it, it must be played manually?

Answer 1

Per Justin808's answer, the general idea would be like this:

if (!cookieIsSet()) {
  setCookie();
  playMovie();
}

See the W3Schools site for an example use of cookies similar to what you want to achieve: http://www.w3schools.com/js/js_cookies.asp

If you are embedding a YouTube video you could do it like this:

Obviously, you would have to define your own cookieIsSet() and setCookie() functions. See the W3School's site for examples how.