公开(公告)号：US20230171406A1

公开(公告)日：2023-06-01

申请号：US18153131

申请日：2023-01-11

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/30

CPC classification number: H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/30

Abstract: A method, computer program, and computer system are provided for video coding. The video coding includes decoding one or more previously encoded frames of a video source that are designated as reference frames for the video source, searching the reference frames for one or more candidate pixel blocks for an input frame of the video source, and encoding the input frame based on the one or more candidate pixel blocks.

公开(公告)号：US20230146503A1

公开(公告)日：2023-05-11

申请号：US17971057

申请日：2022-10-21

Applicant: TENCENT AMERICA LLC

Inventor： Arianne HINDS ,  Rohit ABHISHEK ,  Stephan WENGER

IPC: H04L65/61

CPC classification number: H04L65/61

Abstract: Packaging media for optimizing immersive media distribution of a media steam performed by at least one processor, is provided, including: receiving immersive media data for an immersive presentation; acquiring asset information associated with media assets corresponding to a set of scenes included in the immersive media data for the immersive presentation; analyzing characteristics of the media assets based on the asset information, the characteristics comprising an asset type associated with a respective media asset and a frequency that indicates a number of times the respective media asset is used among the set of scenes included in the immersive presentation; ordering the media assets in a sequence based on the asset type and the frequency associated with each of the media assets; and streaming the immersive media data for the immersive presentation based on the ordered sequence of the media assets.

公开(公告)号：US20230144440A1

公开(公告)日：2023-05-11

申请号：US17970109

申请日：2022-10-20

Applicant: TENCENT AMERICA LLC

Inventor： Arianne HINDS ,  Rohit ABHISHEK ,  Stephan WENGER

IPC: G06F16/435 ,  G06F16/438

CPC classification number: G06F16/435 ,  G06F16/438

Abstract: A method and apparatus for determining that a media asset appears in at least two or more scenes in scenes associated with an immersive media presentation, sending a request to a client querying whether the client has access to the media asset appearing in at least two or more scenes in a local cache, receiving a reply indicating whether the client has access, signaling, in response to the reply indicating that the client has access to the media asset appearing in at least two or more scenes in the local cache, the client to use the media asset in a subsequent scene, and distributing the media asset to the client in response to the reply indicating that the client has no access to the media asset appearing in at least two or more scenes in the local cache.

公开(公告)号：US20230086585A1

公开(公告)日：2023-03-23

申请号：US18071859

申请日：2022-11-30

Applicant: TENCENT AMERICA LLC

Inventor： Stephan WENGER ,  Shan LIU

IPC: H04N19/66 ,  H04N19/196 ,  H04N19/70 ,  H04N19/177 ,  H04N19/44 ,  H04N19/127 ,  H04N19/169 ,  H04N19/463

Abstract: A method of and a device for decoding a coded picture coded according to a video codec technology or standard that uses a syntax structure including a Picture Header and at least one Picture Parameter Set (PPS) are provided. The method includes decoding, by a decoder, the Picture Header, the Picture Header including transient information pertaining to a plurality of Coding Units of the coded picture, and the transient information of the Picture Header including at least one reference to the at least one PPS, and further including at least one first syntax element pertaining to an aspect of the video codec technology or standard for decoding. The method further includes activating, by the decoder, a PPS of the at least one PPS that is decoded, the PPS including a second syntax element pertaining to the aspect of the video codec technology or standard for decoding.

公开(公告)号：US20230084029A1

公开(公告)日：2023-03-16

申请号：US17941924

申请日：2022-09-09

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Shan LIU ,  Stephan WENGER

IPC: H04N19/82 ,  H04N19/70

Abstract: A method, computer program, and/or computer system is provided for coding a video sequence. Video data containing one or more faces may be received. One or more virtual boundaries between the one or more faces of the received video data may be selected. In-loop filtering may be disabled between the one or more selected virtual boundaries from among the virtual boundaries, based on the selected boundaries being discontinuous in a three-dimensional geometry.

公开(公告)号：US20230013580A1

公开(公告)日：2023-01-19

申请号：US17941560

申请日：2022-09-09

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Shan LIU ,  Stephan WENGER

IPC: H04N19/169 ,  H04N19/15 ,  H04N19/174

Abstract: Methods and devices for encoding a video stream are provided, a method includes storing previously decoded pictures of the video stream in a decoded picture buffer, including a plurality of first pictures of a same temporal sub-layer, the plurality of first pictures including at least one sub-layer reference picture for predicting a current picture of the video stream; identifying a network abstract layer (NAL) unit type of a picture of the plurality of first pictures; removing, based on the NAL unit type of the picture identified, the picture from the decoded picture buffer; and encoding the current picture using the decoded picture buffer. The encoding includes: predicting the current picture using one or more of the at least one sub-layer reference picture that is stored within the decoded picture buffer, after removing the picture from the decoded picture buffer.

公开(公告)号：US20230007305A1

公开(公告)日：2023-01-05

申请号：US17850608

申请日：2022-06-27

Applicant: Tencent America LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Xiang LI ,  Shan LIU

IPC: H04N19/70 ,  H04N19/44 ,  H04N19/172 ,  H04N19/167 ,  H04N19/119 ,  H04N19/30

Abstract: Aspects of the disclosure provide a method, an apparatus, and non-transitory computer-readable storage medium for video decoding. The apparatus includes processing circuitry configured to decode at least one of a first flag or a second flag in a syntax structure for a first picture in a coded video sequence (CVS). The first flag can indicate whether first subpicture partitioning information of the first picture is signaled in the syntax structure. The second flag can indicate whether first subpicture scaling window information for a first subpicture included in the first picture is signaled in the syntax structure. The processing circuitry reconstructs the first subpicture based on the at least one of the first flag indicating that the first subpicture partitioning information of the first picture is signaled in the syntax structure or the second flag indicating that the first subpicture scaling window information for the first subpicture is signaled in the syntax structure.

公开(公告)号：US20220417544A1

公开(公告)日：2022-12-29

申请号：US17851723

申请日：2022-06-28

Applicant: Tencent America LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Xiang LI ,  Shan LIU

IPC: H04N19/44 ,  H04N19/176 ,  H04N19/172 ,  H04N19/46

Abstract: Aspects of the disclosure provide a method, an apparatus, and non-transitory computer-readable storage medium for video decoding. The apparatus includes processing circuitry that is configured to decode a supplemental enhancement information (SEI) message that indicates independent region output information. The independent region output information indicates an independent region that is independently decodable in a current picture. The processing circuitry determines the independent region in the current picture based on offset information and dimension information of the independent region in the independent region output information. The processing circuitry decodes the determined independent region irrespective of whether the entire current picture is decoded. The processing circuitry outputs the decoded independent region based on a position indicated by the offset information and a size indicated by the dimension information of the independent region.

公开(公告)号：US20220345512A1

公开(公告)日：2022-10-27

申请号：US17499561

申请日：2021-10-12

Applicant: Tencent America LLC

Inventor： Shuai ZHAO ,  Stephan WENGER ,  Shan LIU

IPC: H04L29/08

Abstract: Aspects of the disclosure provide methods and apparatus for accessing a Constrained Application Protocol (CoAP) server in a media scene description system. A CoAP request can be sent, by a media access function (MAF) of processing circuitry implementing the media scene description system using an application programming interface (API), to the CoAP server to request a media resource. The MAF can be configured as a CoAP client or a Hypertext Transfer Protocol (HTTP)-CoAP proxy. A CoAP response can be received, by the MAF using the API, from the CoAP server. In an example, the CoAP response includes the requested media resource. In an embodiment, the MAF is compatible with both the CoAP request according to a CoAP communication protocol and a proxy request according to an HTTP communication protocol.

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.