Susan - mostly I use pictures that I have bought from photo sites- and each site has their own license..which is say the least...(what are they really saying???) For instance one site- I could use the picture for my book video *but couldn't use the same picture to put on coffee cups for promotional purposes. I did email each company and tell them what I was doing and got the OKAY. I do NOT use any "free" pictures from Photo sites in my videos. I do not want to infringe on any copyright law.
My husband takes great pictues and I have used a few of them- just depends what I want.
* I just found out today that "book trailers" are copyrighted- more on that in next session, however I will try to use the phrase "book video" from now on. Thank for your questions.