公开(公告)号：US20220337882A1

公开(公告)日：2022-10-20

申请号：US17857606

申请日：2022-07-05

Applicant: Tencent America LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/70 ,  H04N19/31 ,  H04N19/105

Abstract: There is included a method and apparatus comprising computer code configured to cause a processor or processors to perform parsing at least one video parameter set comprising at least one syntax element indicating whether at least one layer in the scalable bitstream is one of a dependent layer of the scalable bitstream and an independent layer of the scalable bitstream, determining a number of dependent layers, including the dependent layer, of the scalable bitstream based on a plurality of flags included in the VPS, decoding a picture in the dependent layer by parsing and interpreting an inter-layer reference picture list, and decoding a picture in an independent layer without parsing and interpreting the inter-layer reference picture list.

公开(公告)号：US20220335658A1

公开(公告)日：2022-10-20

申请号：US17857835

申请日：2022-07-05

Applicant: TENCENT AMERICA LLC

Inventor： Shuai ZHAO ,  Iraj SODAGAR ,  Shan LIU ,  Byeongdoo CHOI ,  Sehoon YEA ,  Arash VOSOUGHI

IPC: G06T9/40 ,  H04N19/184 ,  G06T17/00 ,  H04N19/96

Abstract: A method of obtaining a tree-based point cloud compression (PCC) media stream using moving picture experts group (MPEG)-dynamic adaptive streaming over http (DASH), is performed by at least one processor and includes obtaining, from a server, a media representation description (MPD) comprising a PCC uniform resource indicator (URI) and a PCC three-dimensional (3D) descriptor, and determining whether the PCC URI comprised in the obtained MPD indicates that the tree-based PCC media stream is to be accessed. The method further includes, based on the PCC URI being determined to indicate that the tree-based PCC media stream is to be accessed, obtaining, from the server, the tree-based PCC media stream, using the PCC 3D descriptor comprised in the obtained MPD.

公开(公告)号：US20220295072A1

公开(公告)日：2022-09-15

申请号：US17832267

申请日：2022-06-03

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/132 ,  H04N19/196 ,  H04N19/139 ,  H04N19/105

Abstract: A method, device, and non-transitory computer-readable medium for decoding an encoded video bitstream using at least one processor, including obtaining a coded picture from the encoded video bitstream; decoding the coded picture to generate a decoded picture; obtaining a first flag indicating whether reference picture resampling is enabled; obtaining a second flag indicating whether reference pictures have a constant reference picture size; obtaining a third flag indicating whether output pictures have a constant output picture size indicated in the encoded video bitstream; generating a reference picture by resampling the decoded picture to have the constant reference picture size, and storing the reference picture in a decoded picture buffer; and generating an output picture by resampling the decoded picture to have the constant output picture size, and outputting the output picture.

公开(公告)号：US20220286702A1

公开(公告)日：2022-09-08

申请号：US17752132

申请日：2022-05-24

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/463 ,  H04N19/103 ,  H04N19/157 ,  H04N19/70

Abstract: A method, computer program, and computer system is provided for signaling output layer sets in a coded video stream. Video data having multiple layers is received. One or more syntax elements are identified. The syntax elements specify one or more output layer sets corresponding to output layers from among the multiple layers of the received video data. The one or more output layers corresponding to the specified output layer sets are decoded and displayed.

公开(公告)号：US20220279206A1

公开(公告)日：2022-09-01

申请号：US17743678

申请日：2022-05-13

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Shan Liu ,  Stephan Wenger

IPC: H04N19/59 ,  H04N19/105 ,  H04N19/174

Abstract: There is included a method and apparatus comprising computer code configured to cause a processor or processors to perform obtaining video data comprising data of a plurality of semantically independent source pictures, determining, among the video data, whether references are associated with any of a first access unit (AU) and a second AU according to at least one picture order count (POC) signal value included with the video data, and outputting a first quantity of the references set to the first AU and a second quantity of the references set to the second AU based on the at least one POC signal value.

公开(公告)号：US20220210440A1

公开(公告)日：2022-06-30

申请号：US17693849

申请日：2022-03-14

Applicant: TENCENT AMERICA LLC

Inventor： Xiaozhong XU ,  Byeongdoo CHOI ,  Shan LIU

IPC: H04N19/159 ,  H04N19/119 ,  H04N19/70 ,  H04N19/174 ,  H04N19/44 ,  H04N19/172

Abstract: Aspects of the disclosure provide a method and an apparatus including processing circuitry for video decoding. The processing circuitry receives, from a coded video bitstream, coding information for a current picture. At least one flag in the coding information indicates one or more allowable coding types for sub-partitions in the current picture. The one or more allowable coding types include at least one of intra coding and inter coding for the sub-partitions. The processing circuitry determines, based on the at least one flag, whether to decode intra syntax elements used only for coding intra sub-partitions and whether to decode inter syntax elements used only for coding inter sub-partitions. The processing circuitry decodes the intra syntax elements in the coding information when the intra syntax elements are determined to be decoded and decodes the inter syntax elements in the coding information when the inter syntax elements are determined to be decoded.

公开(公告)号：US20220150521A1

公开(公告)日：2022-05-12

申请号：US17582570

申请日：2022-01-24

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Shan LIU ,  Stephan WENGER

IPC: H04N19/44 ,  H04N19/503

Abstract: A method and system for decoding a coded video sequence may include obtaining the coded video sequence, and decoding the coded video sequence. A a value of a temporal sublayer identifier of a video coding layer (VCL) network abstraction layer (NAL) unit in the coded video sequence is constrained to be less than or equal to a value of vps_max_sublayers_ minus1, that specifies a maximum number of temporal sublayers that may be present in a layer in each coded video sequence referring to the video parameter set (VPS), in the VPS referred to by the VCL NAL unit.

公开(公告)号：US20220007044A1

公开(公告)日：2022-01-06

申请号：US17478442

申请日：2021-09-17

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/46 ,  H04N19/122 ,  H04N19/119 ,  H04N19/136

Abstract: A method of efficient signalizing of picture size and partitioning information in a video bitstream, is performed by at least one processor and includes obtaining, from a sequence parameter set (SPS) to which a coded picture refers, a flag indicating whether the picture size and partitioning information of the coded picture is included in the SPS, and determining whether the obtained flag indicates that the picture size and partitioning information is included in the SPS. The method further includes based on the flag being determined to indicate that the picture size and partitioning information is included in the SPS, obtaining, from the SPS, the picture size and partitioning information, and based on the flag being determined to indicate that the picture size and partitioning information is not included in the SPS, obtaining, from a video parameter set (VPS), the picture size and partitioning information that is included in the VPS.

公开(公告)号：US20210337236A1

公开(公告)日：2021-10-28

申请号：US17366962

申请日：2021-07-02

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/65 ,  H04N19/176 ,  H04N19/159 ,  H04N19/30

Abstract: A method of decoding an encoded video bitstream using at least one processor includes obtaining a coded video sequence from the encoded video bitstream; obtaining a first syntax element indicating a number of a plurality of layers included in the coded video sequence; obtaining a second syntax element indicating whether the plurality of layers included in the coded video sequence are all independent layers; based on the first syntax element indicating that the number of the plurality of layers is greater than one, and the second syntax element indicating that the plurality of layers are not all the independent layers, obtaining a third syntax element indicating an output mode; determining the output mode based on the third syntax element; determining one or more output layers from among the plurality of layers based on the determined output mode; and outputting the one or more output layers.

公开(公告)号：US20210306443A1

公开(公告)日：2021-09-30

申请号：US17077546

申请日：2020-10-22

Applicant: TENCENT AMERICA LLC

Inventor： Stephan WENGER ,  Byeongdoo CHOI ,  Shuai ZHAO

IPC: H04L29/06

Abstract: A method, device, and computer-readable medium for packetizing a plurality of network abstraction layer (NAL) units of a picture using at least one processor, including obtaining the plurality of NAL units including a first NAL unit of the picture and a last NAL unit of the picture; splitting the first NAL unit of the picture into a first plurality of fragments and splitting the last NAL unit of the picture into a last plurality of fragments; packetizing the first plurality of fragments into a first plurality of fragmentation unit (FU) packets and packetizing the last plurality of fragments in to a last plurality of FU packets; and transmitting the first plurality of FU packets and the last plurality of FU packets, wherein a last FU packet of the last plurality of FU packets includes a last FU header including a last R bit, and wherein the last R bit is set to 1.