This problem can be fix by using software. Some computer geeks do this manually by entering the system registry. The software you need to use is the Codec Tweak Tool or the Filmerit. You can use the first one in windows 7. You can download the tool first tool here. Codec Guide: More downloads
I’m confused if you are downloading the videos or burning them on the DVD. If you are downloading the videos, download them completely on your computer before burning them on the DVD. You cannot burn data into a disc via URL or the data to be burned is stored remotely. The file has to be in your local hard drive before starting the burning.
Also, try replacing the DVD disc you are using to burn the videos. There are times, problems with burning has something to do with the disc. Before burning, try buying two or three different brands of DVD discs so you have alternatives in case one disc fails to burn.
The problem is often related to how the disc was built or the materials or components used to create the disc. If the disc you are using is a “DVD+R,” try using a “DVD-R.” Though both disc types look similar physically, they differ by standards and function. The “DVD-R” and “-RW” formats are approved officially by the DVD Forum standards group.
The “DVD+R” and “+RW” formats are not approved by the DVD Forum standards group but instead supported by the DVD+RW Alliance. The DVD Forum standards group was founded by Hitachi, Mitsubishi, Sony, and Time Warner while the DVD+RW Alliance is supported by Dell, JP, Sony, Yamaha, and Philips.
With a DVD-R, small marks are placed in the grooves of the disc which verifies how the DVD reader processes information on the disc while with a DVD+R, it doesn’t have these “land prepits” or tiny marks but instead measures the wobble frequency as the laser processes the disc.