Can I record a movie on the DVR that I purchase ON Demand?
No. But you can typically view the movie for anywhere between 24-48 hours after ordering. This information should be presented on the guide pre-order screens.
Are you purchasing a DVR? Most are locked out from recording most premium, on demand and PPV content. Especially HD content
There were a few that record off component video but none that record from HDMI
And cable supplied DVR's usually only are allowed to record normal, not on demand, PPV or one time purchased movies., Some copyrights allow only a single playback and then the program is erased.