Use the Source Type page of the Burn DVD Wizard to select whether to burn a disk image, ISO image , or select to compile a DVD out of video files in order to burn it later:

“I have video files and I want to create a DVD out of them” Radio button
Select this radio button to create a video DVD out of number of video files then burn it to DVD disc. This radio button is selected by default.
“I have a DVD video on disk and I want to burn it” Radio button
Select this radio button to select an on-disk DVD image folder for burning.
“I have an ISO file on disk and I want to burn it” Radio button
Select this radio button to select an on-disk ISO DVD image file for burning.
Help Button
Select the Help button to open a pop-up help topic for this dialog.
Next Button
Select the Next button to move to the next wizard page.
Exit Button
Select the Exit button to close the wizard.
See Also