Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Ge Video Compression, LLC

Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.v.

Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E. V.

Dolby Video Compression, LLC

Robert Philipp Skupin

Thomas Schierl

Cornelius Hellge

Thomas Wiegand

Yago Sánchez De La Fuente

Detlev Marpe

Valeri George

Karsten Suehring

Karsten Sühring

Karsten Grueneberg

Yago Sanchez De La Fuente

Benjamin Bross

Gerhard Tech

Dimitri Podborski

Anastasia Henkel

Karsten Grüneberg

Heiko Schwarz

Adam Wieckowski

Yago Sánchez

Tobias Hinz

Jackie Ma

Jens Brandenburg

Christian Lehmann

Serhan Gül

Karsten Gruneberg

Yago Sanchez

Martin Winken

Peter Eisert

Anna Hilsmann

Gurdeep Singh Bhullar

Christian Bartnik

Sebastian Bosse

Jangwoo Son

Yago Sänchez De La Fuente

Wieland Morgenstern

Interpolation between explicitly signaled CPB (or HRD) parameters at selected bit rates is used to achieve a good compromise between CPB parameter transmission capacity and CPB parametrization effectiveness and may be, particularly, made in an effective manner.

Video coding using a coded picture buffer

A concept for transmitting information from a client to a server is described, the client being for streaming visual content from the server and for integrating the visual content into a 3D scene of a user application, and the client being for obtaining a rendered view of the 3D scene.

Client-server communication for streaming of visual content

A video decoder for decoding a video from a data stream is configured to decode an indication from the data stream which is valid for a sequence of pictures of the video, and indicates that RASL pictures within the sequence of pictures are coded in a manner excluding a predetermined set of one or more coding tools.

Video coding concept allowing for limitation of drift

A video data stream is rendered reducible in a manner so that the reduction leads to a restriction of pictures of the reduced video data stream to merely a predetermined subarea of the pictures of the original video data stream and in a manner so that transcoding, such as re-quantization, may be avoided and a conformance of the reduced video data stream relative to the codec underlying the original video data stream be maintained. This is achieved by providing the video data stream with information including an indication of the predetermined subarea and replacement indices for redirecting the indices included by the payload portion so as to refer to, and/or replacement parameters for adjusting the first set of coding parameter settings so as to result in, a second set of coding parameter settings.

Concept for picture/video data streams allowing efficient reducibility or efficient random access

Video data for deriving a spatially variable section of a scene therefrom as well as corresponding methods and apparatuses for creating video data for deriving a spatially variable section of a scene therefrom and for deriving a spatially variable section of a scene from video data. The video data comprises a set of source tracks comprising coded video data representing spatial portions of a video showing the scene and is formatted in a specific file format and supports the merging of different spatial portions into a joint bitstream through compressed-domain processing.

Merging friendly file format

An apparatus for presenting immersive media content is described. The apparatus obtains from a sender video data representing immersive content for a certain viewing direction and/or for a certain viewpoint, and displays the video data representing the immersive content for the certain viewing direction and/or for the certain viewpoint.

Immersive media content presentation and interactive 360° video communication

Video coding concepts are described which relate to encoding, decoding, extracting and mixing video data streams having encoded therein pictures in a manner subdivided into independently coded subpictures. The concepts relate to an extraction of subpicture specific video data streams having a layer of subdivided pictures and a layer of un-subdivided pictures, a handling of inter-layer prediction tools and a handling of scaling windows for inter-layer prediction for such video data streams, a determination of decoder capability requirements for such data streams, layer-specific constraints for such data streams, and mixing of subpictures encoded with different types of independent coding.

Subpicture-related video coding concepts

A data stream having volumetric video data encoded therein in a scene description language, the data stream representing a scene comprising one or more objects is disclosed, wherein the data stream comprises for at least one object first mesh data, second mesh data and correspondence information, wherein the first mesh data describes the at least one object with a first mesh, the second mesh data describes the at least one object with a second mesh, and wherein the correspondence information indicates a mapping between the first and second mesh. Devices, Methods and a computer program product are also described.

Data stream, devices and methods for volumetric video data

File format concepts for video files are described. It is proposed to that descriptive data of a file indicates whether a parameter set for a track of a file is forwarded when jointly decoding a sub-stream of the track and a further track, and/or that a file includes, for a sub-stream of a video stream signaled in the file, an alternative parameter set to a parameter set for fully decoding the track, the alternative parameter set being for decoding the sub-stream, so as to allow for switching between multiple tracks of a file, and/or that step-wise stream access pictures of a track of a file are marked as stream access point pictures for accessing the track, and/or that a temporal length within which a decoder refresh in case of a joint decoding of sub-streams distributed over multiple tracks is indicated in a file, and/or that a file provides information from which it is derivable whether a pixel aspect ratio varies.

File format schemes allowing efficient ROI, stream access and parameter set handling

The present invention is concerned with decoders, encoders and corresponding methods for handling video data streams () comprising a first sub-bitstream (-) and a second sub-bitstream (-). The herein described concept provides solutions for mixing, within an access unit (), different NAL units () of different NAL unit types. For example, RAP NAL unit types may be mixed with different IRAP NAL unit types or non-IRAP NAL unit types, and non-IRAP NAL unit types may be mixed with different non-IRAP NAL unit types.

Decoder, encoder and methods for mixing NAL units of different NAL unit types in video streams

Sub-picture extraction is rendered less complex by providing each slice with start position information which indicates a starting position from which onwards the picture is, along a coding path, encoded into the respective slice, relative to an onset position at which the coding path starts traversing a segment the starting position is located in. Alternatively or additionally, sub-picture extraction processes are treated like choosing one layer out of a multi-layer datastream.

Efficient sub-picture extraction

The present invention concerns file parsers, file generators encoders, decoders, clients, servers and methods using parameter sets for coded video sequences. Said parameter sets may have decoding parameter information and may be conveyed in-band or out-of band. Some embodiments provide solutions to problems being related with correctly initializing a decoder for decoding coded video sequences in open GOP switching scenarios. Some embodiments may provide for hierarchical track switching levels.

File parser, file generator, encoder, decoder, client, server, and methods using parameter sets for coded video sequences

Concepts are described, including encoding of a video into data stream and decoding of a data stream having a video encoded thereinto, using motion compensation prediction between pictures of equal resolution and pictures of different resolution, based on motion vectors at a half-sample resolution and on motion vectors at a different resolution using interpolation filters to obtain sub-sample values within a reference sample array. The interpolation filter is selected from two interpolation filter versions different in a higher edge preserving property, and the selection is depending on whether a current picture is equal in picture resolution to the reference sample array in horizontal and/or vertical dimension, and/or a constraint information in the data stream.

Factional sample interpolation for reference picture resampling

Video codec concepts which allows more effective video composition/merging and/or a more effective implementation of gradual decoding refresh are described along with concepts of allowing video composition/merging being more effective, for instance, in terms of complexity of the composition/merging task.

Growing community of inventors

Berlin, Germany

Robert Philipp Skupin