Abstract: 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.

Abstract: A video decoding configured to read one or more video coding layer network abstraction layer units, VCL NAL units, within an access unit, AU, in a video data stream; generate a reconstructed version of a decoded picture from the one or more VCL NAL units; read an adaptive loop filter adaptive parameter set, ALF APS, the ALF APS being a suffix adaptive parameter set network abstraction layer unit type, APS NAL unit type, and the suffix APS NAL unit type indicating that the ALF APS follows the one or more VCL NAL units within the AU; and perform adaptive loop filtering on the reconstructed version of the decoded picture in a manner depending on one or more coefficients comprised by the ALF APS.

Abstract: Information available from coding/decoding the base layer. i.e. base-layer hints, is exploited to render the motion-compensated prediction of the enhancement layer more efficient by more efficiently coding the enhancement layer motion parameters.

Abstract: The present invention is concerned with methods, encoders, decoders and data streams for coding pictures, and in particular a consecutive sequence of pictures. Some embodiments may exploit the so-called Gradual Decoder Refresh—GDR—coding scheme for coding the pictures. Some embodiments may suggest Scalable Coding and Gradual Decoder Refresh improvements.

Abstract: An apparatus for receiving a video data stream as an input bitstream is provided. The video data stream has a video encoded thereinto, wherein, for a playback speed modification factor (Nx), the apparatus is to determine a decoding capability requirement depending on a decoding capability requirement limit, wherein the playback speed modification factor (Nx) is a forward playback speed modification factor or is a backward playback speed modification factor.

Abstract: Video decoder comprising a decoding core (94) configured to reconstruct a decoded picture using motion compensated prediction and transform-based residual decoding from one or more video coding units (100) within an access unit, AU, of a video data stream to obtain a reconstructed version (46a) of the decoded picture; an in-loop filter (90) configured to filter the reconstructed version of the decoded picture to obtain a version (46b) of the decoded picture to be inserted into the decoded picture buffer (92), 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 (102, 104) located within the access unit, AU, of the decoded picture which follow, along data stream order, the one or more video coding units (100), and/or a portion (106) of the one or more video coding units (100) following, along data stream order, data (108) comprised by the one or more video cod

Abstract: A video encoder according to embodiments 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.

Abstract: The present invention is concerned with methods, encoders, decoders and data streams for coding pictures, and in particular a consecutive sequence of pictures, Some embodiments may exploit the so-called Gradual Decoder Refresh—GDR—coding scheme for coding the pictures. Some embodiments may suggest Scalable Coding and Gradual Decoder Refresh improvements.

Abstract: An apparatus for receiving a video data stream as an input bitstream is provided. The video data stream has a video encoded thereinto, wherein, for a playback speed modification factor (Nx), the apparatus is to determine a decoding capability requirement depending on a decoding capability requirement limit, wherein the playback speed modification factor (Nx) is a forward playback speed modification factor or is a backward playback speed modification factor.

Abstract: A video data stream having a video encoded thereinto and is described. It includes first timing information on first coded picture buffer, CPB, removal times to be applied at decoder side in case of buffering a complete version of the video data stream, and second timing information on second CPB removal times to be applied at decoder side for buffering a reduced version of the video data stream, differing from the video data stream by removal of a portion of the video data stream from the complete version of the video data stream. Corresponding video encoders, video decoders, network nodes, apparatuses for managing the coded picture buffer, CPB, of a video decoder, and apparatuses for splicing together video data streams are also referred to.

Abstract: 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.

Abstract: Video decoder configured to decode a video comprising a plurality of pictures from a video data stream by decoding each picture from one or more video coding units within an access unit of the video data stream which is associated with the respective picture; read a substitute coding unit type from a parameter set unit of the video data stream; for each predetermined video coding unit, read a coding unit type identifier (100) from the respective video coding unit; check whether the coding unit identifier identifies a coding unit type out of a first subset of one or more coding unit types (102) or out of a second subset of coding unit types (104), if the coding unit identifier identifies a coding unit type out of the first subset of one or more coding unit types, attribute the respective video coding unit to the substitute coding unit type; if the coding unit identifier identifies a coding unit type out of the second subset of coding unit types, attribute the respective video coding unit to the coding unit typ

Abstract: 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.

Abstract: Information available from coding/decoding the base layer, i.e. base-layer hints, is exploited to render the motion-compensated prediction of the enhancement layer more efficient by more efficiently coding the enhancement layer motion parameters.

Abstract: A video decoder (151) 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 (151) comprises an input interface (160) configured for receiving the encoded video signal comprising the encoded picture data. Moreover, the video decoder (151) comprises a data decoder (170) 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.

Abstract: 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.

Abstract: 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.

Abstract: An interleaved multi-layered video data stream with interleaved decoding units of different layers is provided with further timing control information in addition to the timing control information reflecting the interleaved decoding unit arrangement. The additional timing control information pertains to either a fallback position according to which all decoding units of an access unit are treated at the decoded buffer access unit-wise, or a fallback position according to which an intermediate procedure is used: the interleaving of the DUs of different layers is reversed according to the additionally sent timing control information, thereby enabling a DU-wise treatment at the decoder's buffer, however, with no interleaving of decoding units relating to different layers. Both fallback positions may be present concurrently. Various advantageous embodiments and alternatives are the subject of the various claims attached herewith.

Abstract: The signalization of the inter-layer dependencies between layers of a multi-layered data stream is described. A good compromise between a too intensive restriction of the potential diversity of inter-layer dependencies on the one hand and a too complex signaling of the inter-layer dependencies on the other hand has been found by describing the inter-layer dependencies by way of a first inter-dependency syntax structure indicating inter-dependencies between pairs of different values representable by a base layer-ID and a second inter-dependency syntax structure indicating inter-dependencies between pairs of different values representable by an extension layer-ID, the base layer ID and extension layer ID indexing the layers the portions of the multi-layer data stream are associated with.

Abstract: A video data stream having a video encoded thereinto and is described. It includes first timing information on first coded picture buffer, CPB, removal times to be applied at decoder side in case of buffering a complete version of the video data stream, and second timing information on second CPB removal times to be applied at decoder side for buffering a reduced version of the video data stream, differing from the video data stream by removal of a portion of the video data stream from the complete version of the video data stream. Corresponding video encoders, video decoders, network nodes, apparatuses for managing the coded picture buffer, CPB, of a video decoder, and apparatuses for splicing together video data streams are also referred to.