Many DVDs contain more video and data information than will fit to a standard DVD's 4.7GB of storage space. That's where dual-layered DVDs come in. Dual-layered discs can store up to 8.5GB of data. If you don't have a dual-layered disc on hand though, you can make a 7.5GB DVD file work on a 4.7GB disc. While you cannot reformat the 4.7GB DVD as a 7.5GB DVD, you can compress the 7.5GB video file so that it fits to the 4.7GB disc.
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Launch the DVD-burning software that you normally use to burn video to disc. Many DVD burners provide the necessary tool for formatting a 7.5GB video for a 4.7GB DVD, including CyberLink PowerProducer, Brisk DVD Creator and Ultra DVD Creator (see Resources.)
Click the "Add Video" or "Add Files" button in your DVD-burning application. In the window that opens, go to the folder in which the 7.5GB DVD file is stored and double-click the file to add it to the project window.
Click the "Settings," "Project Settings" or "Properties" button or menu in the DVD-burning application. In the "Settings" window that opens, look for an option labeled "Fit to Disc," "Smart Fit" or "AutoFit." If you find this option, click the box beside it to place a checkmark in the box. If an option like this does not appear in the "Settings" window, pull down the menu labeled "Output quality" or "Output file size," and look for an "Automatic" option in the list. Click "OK" or "Save" to save the settings.
Place a blank DVD-R into the DVD drive of your computer. Press the "Create," "Make" or "Burn" button to compress the 7.5GB DVD file to fit on the 4.7GB DVD. Burning progress is monitored in the DVD-burning application window and the DVD usually ejects from the drive once burning is complete.