Bitmovin Gmbh

Dolby Laboratories Licensing Corporation

Christopher Mueller

Stefan Lederer

Christian Timmerer

Yuwen He

James E Crenshaw

Reinhard Grandl

Daniel Weinberger

Bandwidth adaptation is achieved with selection of quality levels of media content to be transferred based on network conditions.

Bandwidth adaptation for dynamic adaptive transferring of multimedia

A streaming media playback device is provided for playing multimedia presentations with segments encoding video data at different quality levels for adaptive streaming through a network from a server, for example based on MPEG DASH. The streaming media playback device selects segments at a given quality level from those available at the server based on an adaptive bitrate setting and an oscillation measure. The adaptive bitrate setting is selected based on network bandwidth conditions. The oscillation measure provides an indication of how often the device switches between segments of different quality levels. The next segment is selected based on the adaptive bitrate setting unless the oscillation measure exceeds a threshold.

Adaptation logic for varying a bitrate

An apparatus is provided. The apparatus has an interface for receiving media information, wherein the media information indicates a segment data rate for each of a plurality of media data segments and further indicates a quality value for each of the plurality of media data segments. Moreover, the apparatus has a processor for selecting one or more selected segments from the plurality of the media data segments depending on the segment data rates of the plurality of media data segments, depending on the quality values of the plurality of media data segments and depending on an available data rate of a communication resource. The interface is configured to transmit a request requesting the one or more selected segments. Moreover, the interface is configured to receive the one or more selected segments being transmitted on the communication resource.

Apparatus and method for constant quality optimization for adaptive streaming

A client configured to retrieve a live-stream media content is shown. The client is configured to receive from a live-streaming server a media presentation description (MPD) describing live-stream media content composed of a sequence of segments and an information on a current segment of the sequence of segments. The client is further configured to commence retrieving the live-stream media content from the live-streaming server from a predetermined segment of the sequence of segments onwards, which the client determined based on the information.

Client, live-streaming server and data stream using an information on a current segment of a sequence of segments

An apparatus for transmitting user data to a server system including one or more servers includes a content encoder for encoding a plurality of portions of the user data to obtain a first data stream, wherein the content encoder is configured to encode each of the plurality of portions with a bandwidth-dependent quality which depends on a bandwidth that is available for transmitting the first data stream from the apparatus to the server system, and includes a transmitter for transmitting the first data stream from the apparatus to the server system. The content encoder is configured to encode two or more of the plurality of portions of the user data to obtain a second data stream, wherein the content encoder is configured to encode each of the two or more of the plurality of portions with a predefined quality.

Apparatus and method for cloud assisted adaptive streaming

A reduction in bitrate oscillation penalties is achieved by determining an oscillation measure measuring a balance of bitrate increase and bitrate decrease of the varied bitrate at which recently retrieved segments of the sequence of segments have been retrieved and setting the bitrate at which a current segment of the sequence of segments is to be retrieved depending on the oscillation measure.

Client configured for retrieving a video data representation of an immersive video scene streamed by a server using a streaming protocol, wherein the server is configured for providing a plurality of streams to the client, wherein each of the streams comprises a portion of the immersive video scene, the client comprising: a sending interface; a reception interface; a viewing direction receiving unit; and a stream selecting unit; wherein the sending interface is configured for transmitting a streaming request for streaming the one or more selected streams as the video data representation of the immersive video scene, wherein the sending interface receives from the stream selecting unit a selected stream information identifying the one or more selected streams, wherein the selected stream information is created by the stream selecting unit based on the viewing direction of the user of the client and based on the manifest.

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Villach, Austria

Christopher Mueller