The Google Drive plugin is for MMCart publishers who want to stream videos directly from their private account, using any player they wish. Normally, you can't play videos from your Google Drive account - unless you use their player. But with the Google Drive plugin, MMCart sites can pull videos from their private Google Drive account, without advertising where it is stored.
The Google Drive Storage Plugin is for publishers who want to deploy pay per view videos that are stored in their DropBox account; it allows MMCart publishers to stream directly from Dropbox and display the video into your own media player.
There is, in effect, double authentication and significantly more security. To our knowledge, this is the only software product that permits Google Drive users to stream files in the JW Player, or other player configured.
See the below video to see it in action.