摘要:
Various functionality with respect to streaming media content is made available to users. Such functionality includes one or more of: streaming media content at a rate independent of the encoded bit rate of the content, allowing streaming of content to continue even when the user has selected various shuttle control options (e.g., pause, stop, fast forward, seek, rewind, etc.), allowing streaming content to be recorded for playback at a later time, and allowing streaming content to be time-shifted.
摘要:
Transmitter and receiver computing device are interconnected by a network. The transmitter transmits protected digital content to the receiver in a manner so that the receiver can access the content even though the content is directly licensed to the transmitter and not the receiver.
摘要:
Transmitter and receiver computing device are interconnected by a network. The transmitter transmits protected digital content to the receiver in a manner so that the receiver can access the content even though the content is directly licensed to the transmitter and not the receiver.
摘要:
A sink sends a registration request to a source and the source validates same, and the source sends a registration response including a secret to the sink. The source then sends a proximity message including a nonce to the sink and concurrently notes a start time. The sink employs the secret and the nonce to generate a proximity value and sends same to the sources. The source receives the proximity value and concurrently notes an end time, verifies the proximity value based on the secret and the nonce, calculates from the noted start and end times an elapsed time, compares the elapsed time to a predetermined threshold value, decides from the comparison whether the sink satisfies the proximity requirement, and registers the sink as being able to access content from such source if the sink satisfies the proximity requirement.
摘要:
A distributed media session is described, which when executed, resolves a distributed topology from a request to stream data from a source device to a client device over a network. The distributed topology references a plurality of software components that, when executed, fulfill the request. At least one of the plurality of software components is executable on each of the source device and the client device.
摘要:
A system and method for embedding a streaming media format header within a session description message. The streaming media format header is encapsulated within a session description message as a header attribute. The streaming media format header describes complex relationships between available media streams. The session description message also includes a list of content description attributes storing metadata about the media streams. A media description field in the session description message stores a stream attribute identifying a media stream associated with the media description field.
摘要:
Various embodiments permit policy updates, such as DRM policy updates, to be delivered and updated for a given piece of protected content. In at least some embodiments, various protocols can be extended to permit policy updates to be represented and carried by the protocol. In one embodiment, Hypertext Transport Protocol or HTTP is utilized to carry the policy updates. In another embodiment, Real Time Streaming Protocol or RTSP is used to carry policy updates.
摘要:
Various embodiments utilize methods of protecting content, such as Digital Rights Management (DRM), to enable secure playback of content on machines and devices within a local network, such as a home media network. In at least some embodiments, messages and content are delivered using, respectively, a control protocol for streaming and a transport protocol. In at least some embodiments, the control protocol for streaming is Real Time Streaming Protocol (RTSP), and the transport protocol is Real Time Transport Protocol (RTP).
摘要:
Protecting elementary stream media content is described. In one aspect, data segments within elementary stream media content are identified. Each data segment includes a single video or audio frame. Encryption boundaries for protecting the payload packets are selected to correspond to data segment boundaries. The elementary stream media content is then protected using the selected encryption boundaries.
摘要:
Systems and/or methods (“tools”) are described that enable a digital rights management policy to be associated with digital media having an arbitrary content type or transfer control protocol. In some embodiments, the tools encrypt data segments of a media file and add a descriptor to each of those segments. These descriptors can enable a receiver of the encrypted media file to decrypt the file and consume it according to the correct digital rights management policy.