A method for transmitting a broadcast signal includes generating a packet carrying a broadcast service and service signaling information, and a packet carrying fast information for supporting rapid service scans and service acquisition, the fast information including identification information for identifying the broadcast service, service category information representing a category of the broadcast service and hidden information representing whether or not the broadcast service is related to a test service; generating a robust header compression (RoHC) packet by compressing a header of each packet, and signaling information including context information generated from the compressing the header of each packet; and transmitting a signal frame including the RoHC packet and the signaling information.

A method of decoding a coded video bitstream implemented by a video decoder is provided. The method includes the video decoder receiving the coded video bitstream, the coded video bitstream containing a gradual decoding refresh (GDR) flag corresponding to a coded video sequence (CVS); determining, by the video decoder, whether a GDR picture is present in the CVS based on a value of the GDR flag; initiating, by the video decoder, decoding of the CVS at the GDR picture when the value of the GDR flag indicates that the GDR picture is present; and generating, by the video decoder, an image according to the CVS as decoded. A corresponding method of encoding implemented by a video encoder is also disclosed.

A method of decoding a coded video bitstream implemented by a video decoder is provided. The method includes the video decoder determining whether a gradual decoding refresh (GDR) picture in the coded video bitstream is an initial picture in decoding order or the initial picture following an end of sequence (EOS) network abstraction layer (NAL) unit in the decoding order; setting a flag to a value to prevent the GDR picture from being output when the GDR picture is the initial picture in decoding order or the initial picture following the EOS NAL unit in the decoding order; decoding the GDR picture; and storing the GDR picture in a decoded picture buffer (DPB).

On-demand systems and methods are provided to manage locally-stored on-demand content. A user's equipment controls the deletion of and/or access to on-demand content from a local storage device based on constraining criteria that may include rental conditions, dynamic factors, and keys.

On-demand systems and methods are provided to manage locally-stored on-demand content. A user's equipment controls the deletion of and/or access to on-demand content from a local storage device based on constraining criteria that may include rental conditions, dynamic factors, and keys.

An excellent display can be performed even when the frame rate changes dynamically at the reception side. When a switching portion at which a sequence of video streams to be transmitted is switched from a first sequence to a second sequence having a different frame rate from the first sequence is provided, display control information is inserted into at least encoded image data of a picture corresponding to the switching portion or a packet containing the encoded image data. A reception side performs display control of pictures using the display control information and implements an excellent display.

An excellent display can be performed even when the frame rate changes dynamically at the reception side. When a switching portion at which a sequence of video streams to be transmitted is switched from a first sequence to a second sequence having a different frame rate from the first sequence is provided, display control information is inserted into at least encoded image data of a picture corresponding to the switching portion or a packet containing the encoded image data. A reception side performs display control of pictures using the display control information and implements an excellent display.

Embodiments of the present disclosure provide systems, methods, and computer storage media for optimizing computing resources generally associated with cloud-based media services. Instead of decoding digital assets on-premises to stream to a remote client device, an encoded asset can be streamed to the remote client device. A codebook employable for decoding the encoded asset can be embedded into the stream transmitted to the remote client device, so that the remote client device can extract the embedded codebook, and employ the extracted codebook to decode the encoded asset locally. In this way, not only are processing resources associated with on-premises decoding eliminated, but on-premises storage of codebooks can be significantly reduced, while expensive bandwidth is freed up by virtue of transmitting a smaller quantity of data from the cloud to the remote client device.

Embodiments of the present disclosure provide systems, methods, and computer storage media for optimizing computing resources generally associated with cloud-based media services. Instead of decoding digital assets on-premises to stream to a remote client device, an encoded asset can be streamed to the remote client device. A codebook employable for decoding the encoded asset can be embedded into the stream transmitted to the remote client device, so that the remote client device can extract the embedded codebook, and employ the extracted codebook to decode the encoded asset locally. In this way, not only are processing resources associated with on-premises decoding eliminated, but on-premises storage of codebooks can be significantly reduced, while expensive bandwidth is freed up by virtue of transmitting a smaller quantity of data from the cloud to the remote client device.

A system to perform latency compensation techniques to facilitate synchronous sharing of video content during a communication session. The system enables video content that is being shared during the communication session to be played synchronously across numerous different client devices that are being used to participate in the communication session, notwithstanding variations in networking latency associated with the different client devices. The disclosed technologies provide improvements over existing screen sharing techniques which include continuously uploading streams of shared media content from a sharer's device and distributing these uploaded streams to other devices. For example, the techniques described herein enable a system to facilitate sharing of video content during a communication session without initially rendering video content at and simultaneously uploading the rendered video content from a sharer's device. Furthermore, the techniques described herein include latency compensation to accommodate for variations in network latency experienced across numerous different client devices.