![]() The service provider issues the keys and licenses necessary to consume the content in a given browser, but the website code, content and encryption keys are common across all of them, regardless of which DRM is in use. With the development and use of Common Encryption (CENC), the problem is substantially reduced because the files are compressed in standard formats and encrypted using global industry standards. In the days when DRM systems used proprietary file formats and encryption methods, this variation in DRM providers by browser would have presented a significant issue. DRM Providers Can Differ by Browser (Click to enlarge) This support allows developers to build plug-in free web video apps that runs across a huge range of platforms and devices, with each MSE/EME implementation built on top of a different media pipeline and DRM provider. Windows 10 and Microsoft Edge support DASH, MSE, EME and CENC natively, and other major browsers ship implementations of MSE and CENC compliant EME. For media, a great forward looking replacement can be based on DASH, MSE, EME and CENC. Now, as the old plug-in models are being removed, replacements for them are needed. This became more difficult as devices and platforms that support browsers multiplied. Plug-ins like Silverlight were intended to support interoperable media by providing versions for every browser they supported. This represents the most broadly interoperable solution across browsers, platforms, content and devices going forward. ![]() At the same time, we encourage companies that are using Silverlight for media to begin the transition to DASH/MSE/CENC/EME based designs and to follow a single, DRM-interoperable encoding work flow enabled by CENC. Silverlight will also continue to be supported in Internet Explorer 11, so sites continue to have Silverlight options in Windows 10. Microsoft continues to support Silverlight, and Silverlight out-of-browser apps can continue to use it. The reasons for this have been discussed in previous blogs and include the emergence of viable and secure media solutions based on HTML5 extensions. Support for ActiveX has been discontinued in Microsoft Edge, and that includes removing support for Silverlight.
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