I am going to start selling "tribute video"s as a business. My market will be legacy-type tributes for funerals and memorials, also 4-5 minute "slideshows" to be shown during receptions at weddings. My question is, I have a couple of sample DVD's I've done for free. Do I need to get a release from the people in the photos? Some aren't alive. The samples are at a website that hosts your personal work. What do I need to do?