Saturday, Wilson-Miller died while holding his father's hand in Melbourne, according to a report by the New York Daily News.
"I'm numb at the moment. It still hasn't registered with me," his father Cameron Miller said. "I was sitting with him. We were going to watch the football that night."
Wilson-Miller posted the video on YouTube on May 1, explaining that he suffered from chronic heart rejected after a second heart transplant had failed.
"I won't be here for as long as I thought,” he said in the video.
Read more - Video: http://www.nj.com/news/index.ssf/2012/05/ailing_teen_who_posted_my_fina.html