You have questions. I have some answers.

Q In the past few years I have noticed that some TV series are not being sold on DVD. Some series have the first and second season sold, but no others. Some other shows are not sold at all. What is the reason for this?

A With a few exceptions, sales of TV shows and movies on DVD and Blu-ray have been declining for years as consumers embraced digital downloads and streaming services. That diminished interest has prompted retailers such as Best Buy to stop stocking discs, so there is less reason for distributors to make shows available in those forms — especially when a digital or streaming version is far more profitable. Only there are consumers who still buy discs. And, as has been pointed out by filmmakers, productions may come and go on streaming services, or not get there at all. Rights issues, such as music, may also work against something getting to any home-viewing form. At the same time, as the Federal Trade Commission has pointed out, you don’t necessarily own a digital download of a production; instead, you have bought “a license to access the content” and the seller may be able to change that at any time. I’ve heard that all this has led to young people embracing so-called physical media — including not only DVDs but CDs and vinyl — because they will always own it. But there’s still not enough of that to guarantee productions will get to discs. Speaking of DVDs and digital …

Q I am trying to locate and buy a legitimate DVD copy of the original, 1972 version of “A Separate Peace” and having no luck. Does it exist? (I have located a VHS version, but can’t play it since I don’t have a VHS machine — who does??)

A The 1972 adaptation of John Knowles’ novel has become somewhat hard to find, especially in comparison to the 2004 version, and I have not come across an authorized DVD. I did find it for sale or rent in digital form on Amazon. And I still have a VCR!