You can try it, but because DVD can be copy protected this layer of code is usually absent.
Why? Because a license fee would have to be paid to mpegla.com. No TV maker will add this feature.
The 46PB20E can access and playvideo/image files stored on a USB thumb drive [mpeg, avi etc. formats]. There is a USB input port. Is it possible to connect an external USB DVD drive to play DVD movies ? The 46PB20E can reconize video files in the vob format.