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：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：US20210400105A1

公开(公告)日：2021-12-23

申请号：US17464272

申请日：2021-09-01

Applicant: TENCENT AMERICA LLC

Inventor： Stephan WENGER ,  Shan LIU

IPC: H04L29/06 ,  H04N19/70 ,  H04N19/184 ,  H04L29/08 ,  H04N19/162 ,  H04N19/44 ,  H04N19/91

Abstract: A method and apparatus for media decoding by a decoder include decoding a first indication indicative of a first conformance point of a coded video sequence. A second indication indicative of a second conformance point of the coded video sequence is decoded. It is determined whether the coded video sequence is decodable by the decoder based on at least one of the first indication and the second indication. The coded video sequence is selectively decoded based on determining whether the decoded video sequence is decodable by the decoder.

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.

公开(公告)号：US20210300551A1

公开(公告)日：2021-09-30

申请号：US17085083

申请日：2020-10-30

Applicant: TENCENT AMERICA LLC

Inventor： Shuai ZHAO ,  Stephan WENGER ,  Paul Spencer DAWKINS

IPC: B64C39/02 ,  G08G5/00

Abstract: Systems and methods may provide unmanned aerial system (UAS) communication, a method performed by a UAS includes obtaining first digital information that indicates a position of an unmanned aerial vehicle (UAV) of the UAS; obtaining second digital information that identifies a zone of a Notice to Airmen (NOTAM); determining whether an airspace violation has occurred by comparing the position of the UAV with the zone of the NOTAM, based on the first digital information and the second digital information; and controlling the UAS to warn a user of the UAS about the airspace violation occurring or potentially occurring, or controlling the UAV to auto return or land, based on the determining.

公开(公告)号：US20210203965A1

公开(公告)日：2021-07-01

申请号：US17063891

申请日：2020-10-06

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Shan LIU ,  Stephan WENGER

IPC: H04N19/30 ,  H04N19/105 ,  H04N19/169

Abstract: A method of extracting a sub-bitstream from an encoded video bitstream using at least one processor includes: obtaining an encoded video bitsream, the encoded video bitstream including a plurality of Network Abstraction Layer (NAL) units; obtaining an output layer set list; comparing the NAL units with the output layer set list; and removing NAL units that are not included in the output layer set list.

公开(公告)号：US20210203939A1

公开(公告)日：2021-07-01

申请号：US17063253

申请日：2020-10-05

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/132 ,  H04N19/189 ,  H04N19/146 ,  H04N19/172

Abstract: There is included a method and apparatus comprising computer code configured to cause a processor or processors to perform acquiring an input bitstream comprising metadata and video data, decoding the video data, determining whether the metadata comprises at least one flag signaling at least one component of a picture size of at least one picture of the video data, and signaling, in a case where it is determined that the metadata comprises the at least one flag, a display device to display the at least one picture from the video data according to the at least one flag.