DRM in Silverlight 5

Question

what is the DRM(Digital Rights Management) in Silverlight 5

Satyapriya Nayak · Answer

Hi John When you integrate Digital Rights Management (DRM) into your Silverlight applications you can better protect and more securely deliver content cross-platform for a variety of scenarios including streaming progressive download rentals and subscriptions. Normal 0 You can use DRM to help you deliver audio and video content that is more secure and better protected from unauthorized capture and redistribution. This protection can be integrated into a variety of business scenarios that include: · Online Scenarios: These scenarios require users to be online while they play back the media content: o Live Streaming: Live streaming (also known as true streaming) sends content directly to the computer or device without saving the file to a hard disk. A live stream is only available while it is being broadcast. Internet television and radio are examples of live streaming. o Progressive Download: Progressive download lets users play back the media while it is downloading. The main difference between progressive download and live streaming—from a user's point of view—is that progressively downloaded content is stored on the user's computer or device at least temporarily. · Offline Scenarios: These scenarios allow users to be offline while they play the content. They do require the offline Silverlight runtime to be installed on a user's computer or device and they do require the user to be online—at least intermittently—in order to initially download the content and renew subscriptions. o Download File Offline (onetime purchase): The user downloads the content from the Internet and later plays it by using an offline Silverlight player. For example an online video store charges customers to download a video file which users can play back in an offline Silverlight player whenever they want. The DRM software can restrict redistribution of the video file to one or more devices (see Domains later in this article). o Rental: You can specify time limits in your DRM licenses in order to limit playback of content. For example an online video store might offer their videos for rent. Once the rental is purchased and the license downloaded the license will expire 30 days after it is issued or 24 hours after content is first played whichever occurs first. o Subscription: You can enable customers to playback content based on a subscription model. For example customers of the online video store pay a monthly fee to watch up to 100 hours of television content online and download up to 20 episodes. In order to renew their subscription they need to pay the monthly fee and connect to the service at least once a month because the subscription license expires every 45 days. Please refer the below link http://msdn.microsoft.com/en-us/library/cc838192%28v=vs.95%29.aspx Thanks