Thank You ALL,
I clarified above that I DID NOT feed .mp4's directly into the "Write files/folders to disc" --->BUILD (DEVICE).
I created .iso files from .mp4 files using "Create image file from files/folders" --->BUILD (IMAGE FILE)
Then I used "Write image file to disc" ---> WRITE selecting the .iso files as input.
I have 3 videos that I created 3 DVD's with using this process. All 3 worked on my DVD player / TV and on my Windows 10 PC.
Then I changed something somewhere while looking at options and boom the process did not work any more.
I used "Disc Layout Editor" to pick the source .iso file and it showed CD specifications so I unchecked the box "AUTOMATIC TARGET MEDIA" and selected DVD-R which matches my media and my hardware. I THOUGHT I HAD THE SETTING TO CORRECT but it still makes a DVD that works on PC and NOT the DVD player
NOW
I have setup two different DVD players on the TV and they both play my earlier videos correctly.
I was wondering why I only watched three other YouTube videos before I started using imgburn, but the process was they way they taught it on YouTube and it worked first three times.
Make an .mp4 into .iso, build a DVD using the .iso as input
I appreciate the help but I think I polluted the options somehow.
I uninstalled iMGbURN off of my windows 10 PC and reinstalled to try to get the settings back that worked.
I examined the DVD's that I made that worked and they show as UDF (File System), since then I have tried making ISO 9660/UDF, UDF (only), ISO 9660 only, and Joliet (only) still not working as the first three did.
Finally I will read the guides and will eventually find out how to do make a DVD from an .iso reliably. Then someday I when I find out what I did differently I will post what it was.
PLEASE NO MORE REPLIES THAT TELL ME NOT TO FEED .MP4 INTO BUILD DVD I NEVER DID THAT
Thanks