Burning a slideshow to a DVD

my sincere thanks to Keith and Tony, allow me to explain, recently purchased a 24" iMac, 512 gig, with Apple M1, Big Sur, version 11.6.2. no problems with slideshow dvd projects in the past with the older iMac, creating slideshow from photos with i tunes fit to slideshow, no problem, export and saving file to desktop, I noticed a m4v extension, something new, not familiar with that, file is approx. 1.70 GB, 24 min. duration, set at 1080. using my old 3rd party DVD app ( miDVD ) on desktop, I tried dragging slideshow file over onto the app, to receive an error message, bringing my project to a halt. My concerns at that point were to look into a converter app changing the file extension to ( .mp4 ), my old DVD device ( asus ) may be posing a problem as well, ordered a USB super drive from Apple, arrives tomorrow, I hope that I may have clarified my dilemma, would appreciate a response, thanks again Roy

thanks Keith, appreciate your help. the USB option should work with my tv, but not for sharing with others in my family, would you be able to recommend a third party app that is compatible with Big Sur, if so my plans would be to burn dvd's on my new super drive, the only other concern I have would be converting the file extension first if it is necessary. Thanks Roy

Hi Keith, thanks for your reply, I would like to expand on your response, I'm not up to speed I guess, would it be possible to discuss my dilemma more thoroughly, by e-mail or phone call, thanks

thanks for all your help Keith, I'll update with the results later, my wife has plans for me the next two days, thanks to everyone, take care, Roy