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

Ge Video Compression, LLC

Dolby Video Compression, LLC

Fraunhofer-gesellschaft Zur F&#xd6;rderung Der Angewandten Forschung E.v.

Karsten Sühring

Thomas Wiegand

Detlev Marpe

Heiko Schwarz

Thomas Schierl

Cornelius Hellge

Heiner Kirchhoffer

Robert Philipp Skupin

Yago Sánchez De La Fuente

Philipp Helle

Benjamin Bross

Valeri George

Mischa Siekmann

Jan Stegemann

Gerhard Tech

Christian Bartnik

Tobias Hinz

Haricharan Lakshman

Ali Atef Ibrahim Khairat Abdelhamid

Adam Wieckowski

Ali Khairat

Ali Altef Ibrahim Khairat Abdelhamid

Thorsten Selinger

Jens Guether

Concepts are described, including encoding, processing and decoding of a data stream having a video encoded thereinto, wherein the video comprises a plurality of pictures, wherein the data stream comprises a plurality of pictures in at least two layers, wherein the pictures of at least one layer are split into a predetermined layer-specific number of subpictures, one or more of the pictures or subpictures of one layer corresponds to one picture or subpictures in one or more other layer, and at least one of the subpictures comprises boundaries for boundary extension for motion compensation, and an indication that at least one of the boundaries of corresponding subpictures or corresponding pictures in different layers are aligned with each other.

Video coding in relation to subpictures

A video decoder () for decoding an encoded video signal comprising encoded picture data to reconstruct a plurality of pictures of a video sequence of a video. The video decoder () comprises an input interface () configured for receiving the encoded video signal comprising the encoded picture data. Moreover, the video decoder () comprises a data decoder () configured for reconstructing the plurality of pictures of the video sequence depending on the encoded picture data. Moreover, further video decoders, video encoders, systems, methods for encoding and decoding, computer programs and encoded video signals according to embodiments are provided.

Encoder and decoder, encoding method and decoding method for reference picture resampling extensions

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

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

An apparatus () for receiving an input video data stream according to an embodiment is provided. The input video data stream has a video encoded thereinto. The apparatus () is configured to generate an output video data stream from the input video data stream.

Video encoder, video decoder, methods for encoding and decoding and video data stream for realizing advanced video coding concepts

A video encoder according to embodiments is provided. The video encoder is configured for encoding a plurality of pictures of a video by generating an encoded video signal, wherein each of the plurality of pictures has original picture data. The video encoder has a data encoder configured for generating the encoded video signal having encoded picture data, wherein the data encoder is configured to encode the plurality of pictures of the video into the encoded picture data. Moreover, the video encoder has an output interface configured for outputting the encoded picture data of each of the plurality of pictures. Furthermore, a video decoders, systems, methods for encoding and decoding, computer programs and encoded video signals according to embodiments are provided.

Encoder and decoder, encoding method and decoding method with complexity handling for flexibly sized picture partitions

An output layer set may describe a video bitstream, or video sequence, which is extractable from a multi-layered video bitstream. Concepts related to output layer sets are described, including a concept for a random-accessible sub-bitstream indication, a concept for handling reference picture alignment, a concept for a bitstream-based OLS determination, a concept for sequence start access units of an extracted video bitstream, a concept for handling temporal sublayers in the extraction process of an output layer set, a concept for handling temporal sublayers in video parameter signaling and a concept for output layer selection in region of interest applications.

Processing of output layer sets of coded video

A video encoder according to embodiments is provided. The video encoder is configured for encoding a plurality of pictures of a video by generating an encoded video signal, wherein each of the plurality of pictures includes original picture data. The video encoder includes a data encoder configured for generating the encoded video signal including encoded picture data, wherein the data encoder is configured to encode the plurality of pictures of the video into the encoded picture data. Moreover, the video encoder includes an output interface configured for outputting the encoded picture data of each of the plurality of pictures. Furthermore, a video decoders, systems, methods for encoding and decoding, computer programs and encoded video signals according to embodiments are provided.

Encoder and decoder, encoding method and decoding method with profile and level dependent coding options

An electronic device for decoding a picture from a data stream is disclosed, the electronic device includes a processor. The processor configured to decode a first syntax element indicating a bit rate value and a second syntax element indicating a bit rate scale. The processor is also configured to determine a fraction of a reference level corresponding to a subpicture of the picture, using a subpicture level information (SLI) supplemental enhancement information (SEI) message. The processor is further configured to determine a bit rate of the subpicture based on the fraction, the first syntax element, and the second syntax element.

Video data stream, video encoder, apparatus and methods for HRD timing fixes, and further additions for scalable and mergeable bitstreams

A first aspect provides concepts for handling coded layer video sequence boundaries in multilayered video bitstreams having inter-layer references. A second aspect provides concepts for handling, signaling and deriving of picture output timing, e.g. with respect to an access unit specific signaling and an output layer specific signaling of a number of repetitions of a picture output.

Miscellaneous signaling concepts for multi-layer video bitstreams and for output timing derivation

Video/picture coding of improved coding efficiency with supporting varying resolution and/or efficiently handling region-wise packing.

Picture/video coding supporting varying resolution and/or efficiently handling region-wise packing

Concepts for a video coding are described. A first aspect provides a concept for determining an interlayer reference picture for inter-predicting a picture of a multi-layered video data stream. A second aspect provides a concept for the usage of an interlayer prediction tool in multi-layered video data streams. A third aspect is concerned with a determination of a maximum temporal sublayer of an OLS or a maximum temporal sublayer to be decoded.

Video coding aspects of temporal motion vector prediction, interlayer referencing and temporal sublayer indication

Video decoder comprising a decoding core () configured to reconstruct a decoded picture using motion compensated prediction and transform-based residual decoding from one or more video coding units () within an access unit, AU, of a video data stream to obtain a reconstructed version () of the decoded picture; an in-loop filter () configured to filter the reconstructed version of the decoded picture to obtain a version () of the decoded picture to be inserted into the decoded picture buffer (), DPB, of the video decoder; and a parametrizer configured to parametrize the in-loop filter by reading in-loop filter control information for parametrizing the in-loop filter from one or more parameter sets () located within the access unit, AU, of the decoded picture which follow, along data stream order, the one or more video coding units (), and/or a portion () of the one or more video coding units () following, along data stream order, data () comprised by the one or more video coding units (), which carries block-based prediction parameter data and prediction residual data, and parametrizing the in-loop filter so as to filter the reconstructed version of the decoded picture in a manner depending on the in-loop filter control information.

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Berlin, Germany

Karsten Sühring