Hi,
In this case, selecting the option VideoDVD, what you are doing is creating a DVD that would contain the information, the burning process would generate a folder for Video and a folder for Audio like another DVD (You can check it on another DVD) Usually all the DVD players can reproduce this. But if you would like to get the video as MP4 what you can do is select DataDVD and add the files, at the en the DVD would give you the option to select the file that you would like to play and would keep the MP4 format.