Adding W3C Media Source Extensions and Encrypted Media Extensions to GStreamer

There are several existing media player frameworks based on client-side web technology that rely on Media Source Extensions (MSE) API within web browsers. A new GStreamer library has implemented the MSE API in GObject C to make it possible for these players to run on top of GStreamer without depending on a web browser library. Separately, since there is currently no complete solution within GStreamer to support the playback of DRM-protected media, a new GStreamer API was designed which maps closely to the Encrypted Media Extensions (EME) specification. Usage of the GStreamer MSE and EME APIs may be combined by applications, though both APIs are designed to function independently. This presentation will discuss the WebKit origins of the MSE library, its design, and the differences between the original implementation and the GStreamer library. The presentation will also provide an overview of the GStreamer EME API design from two perspectives: one of a developer writing an application designed to play protected media, and the second of a developer making a content decryption module (CDM) available to GStreamer. Finally, an end-to-end solution will be shown of a GStreamer application using the EME API to play encrypted content using a commercially available CDM.