Reply to a video with a comment mentioning u/savevideo and you'll get a response in a few minutes with a link. I think Reddit Enhancement Suite might also have an option for adding a download link.
As for an official paid feature: as soon as they start collecting money for video related features, the video creators will start circling for their cut of the revenue.
As for an official paid feature: as soon as they start collecting money for video related features, the video creators will start circling for their cut of the revenue.