Just a guess, what you did was copy the file to disc
Not create a disc in DVD format
The video has to be a specified frame size (not HD) , and file format
I would suggest one of the free DVD "authoring" programs such as AvsToDvd
You load the video file into the program and it recodes the file and creates the correct file structure, and can create the disc image ISO file which will be ready to burn to DVD disc
After that you burn the ISO file to the dvd using ImgBurn which is also free
I recommend visiting
videohelp.comThey have all the info, tutorials, explanations/definitions, and the download links for this software and much more