公开(公告)号：US12028530B2

公开(公告)日：2024-07-02

申请号：US17649712

申请日：2022-02-02

申请人： HULU, LLC

发明人： Chen Liu ,  Wenhao Zhang ,  Xuchang Huangfu ,  Xiaobo Liu ,  Deliang Fu ,  Lan Xie ,  Rui Zhang ,  Shuai Lou ,  Chao Zhang

IPC分类号： H04N19/147 ,  H04N19/115 ,  H04N19/166 ,  H04N19/184

CPC分类号： H04N19/147 ,  H04N19/115 ,  H04N19/166 ,  H04N19/184

摘要： In some embodiments, a method analyzes content of a video to generate a representation for a video that represents a relationship of a bitrate to a quality measurement for the video. A plurality of candidate points on the representation are selected. Then, the method selects a profile ladder from at least a portion of the plurality of candidate points. Each profile in the profile ladder is associated with a candidate point and the profile includes a corresponding bitrate and a quality measurement for the respective candidate point. The profile ladder is used for the video.

公开(公告)号：US20240179332A1

公开(公告)日：2024-05-30

申请号：US18435814

申请日：2024-02-07

申请人： HULU, LLC

发明人： Wenhao Zhang ,  Deliang Fu ,  Min Gao ,  Juncheng Ma ,  Chen Liu

IPC分类号： H04N19/40 ,  H04N19/46 ,  H04N19/96

CPC分类号： H04N19/40 ,  H04N19/46 ,  H04N19/96

摘要： In some embodiments, a method transcodes a first location from a spatial region. The first location is associated with a first pattern defining a structure of splitting a location into smaller shapes. A bit string of bits is included for the first pattern in an encoded bitstream. The method determines the first location in the spatial region when the first pattern of the first location can be reused for a second pattern of a second location. The first location is one of a plurality of locations in the spatial region. Information for the second location is included in the encoded bitstream that indicates the first location in the spatial region without including a bit string of bits for the second pattern. The first location allows the bit string of bits for the first pattern to be retrieved for use to decode the second location from the encoded bitstream.

公开(公告)号：US11956460B2

公开(公告)日：2024-04-09

申请号：US16556015

申请日：2019-08-29

申请人： HULU, LLC

发明人： Wenhao Zhang ,  Deliang Fu ,  Chen Liu ,  Xiaobo Liu

IPC分类号： H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/182

CPC分类号： H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/182

摘要： In some embodiments, a method selects a first template of pixels that is outside of a first block and a second template of pixels that is outside of the first block. Then, the method selects a first region of pixels that are inside the first block and a second region of pixels that are inside the first block. A first weight is calculated based on the first template of pixels and the first region of pixels and a second weight is calculated based on the second template of pixels and the second region of pixels. The first weight and the second weight are used in a motion prediction search for a second block.

公开(公告)号：US11277620B1

公开(公告)日：2022-03-15

申请号：US17085589

申请日：2020-10-30

申请人： HULU, LLC

发明人： Chen Liu ,  Wenhao Zhang ,  Xuchang Huangfu ,  Xiaobo Liu ,  Deliang Fu ,  Lan Xie ,  Rui Zhang ,  Shuai Lou ,  Chao Zhang

IPC分类号： H04N19/147 ,  H04N19/166 ,  H04N19/184 ,  H04N19/115

摘要： In some embodiments, a method generates a representation for a video that represents a relationship of a bitrate to a quality measurement for the video and selects candidate transcoding points on the representation. A plurality of candidate profile ladders are generated based on the candidate transcoding points. Each of the plurality of candidate profile ladders includes a different combination of profiles and a profile is associated with at least one of a bitrate and a quality measurement. The method selects a profile ladder from the plurality of candidate profile ladders based on analyzing the bitrate or the quality of the profile ladder and uses the profile ladder for the video.

公开(公告)号：US11140060B2

公开(公告)日：2021-10-05

申请号：US16681592

申请日：2019-11-12

申请人： HULU, LLC

发明人： Shun Ni ,  Aleksandar Zambelli ,  Shenglan Huang ,  Deliang Fu ,  Wenhao Zhang

IPC分类号： H04L12/26 ,  H04N21/2365 ,  H04N21/238

摘要： In some embodiments, a method analyzes information regarding a round-trip time where the round-trip time is based on sending a request for a segment of a media program and receiving the segment of the media program. The method determines when to switch from requesting a single segment of the media program to sending a request that requests a plurality of segments of the media program. When switching from requesting the single segment of the media program, the request for the plurality segments of the media program is sent where at least two or more of the segments are received without sending a subsequent request for the two or more segments.

公开(公告)号：US11089297B2

公开(公告)日：2021-08-10

申请号：US16555961

申请日：2019-08-29

申请人： HULU, LLC

发明人： Wenhao Zhang ,  Deliang Fu ,  Juncheng Ma ,  Chen Liu

IPC分类号： H04N19/105 ,  H04N19/176 ,  H04N19/139 ,  H04N19/40

摘要： In some embodiments, a method selects a current block in a frame and determines whether the current block is in a first set of positions in the frame. When the current block is in the first set of positions: the method loads a first set of motion vectors from a first list as historical motion vector predictors, wherein the one or more motion vectors are from one or more blocks in the first set of positions in the frame; and uses the first set of motion vectors to transcode the current block. When the current block is not in the first set of positions, the method uses a second set of motion vectors from a second list.

公开(公告)号：US20200077085A1

公开(公告)日：2020-03-05

申请号：US16555961

申请日：2019-08-29

申请人： HULU, LLC

发明人： Wenhao Zhang ,  Deliang Fu ,  Juncheng Ma ,  Chen Liu

IPC分类号： H04N19/105 ,  H04N19/40 ,  H04N19/176 ,  H04N19/139

摘要： In some embodiments, a method selects a current block in a frame and determines whether the current block is in a first set of positions in the frame. When the current block is in the first set of positions: the method loads a first set of motion vectors from a first list as historical motion vector predictors, wherein the one or more motion vectors are from one or more blocks in the first set of positions in the frame; and uses the first set of motion vectors to transcode the current block. When the current block is not in the first set of positions, the method uses a second set of motion vectors from a second list.

公开(公告)号：US11622116B2

公开(公告)日：2023-04-04

申请号：US17218888

申请日：2021-03-31

申请人： HULU, LLC

发明人： Chen Liu ,  Wenhao Zhang ,  Deliang Fu ,  Xiaobo Liu ,  Xuchang Huangfu

IPC分类号： H04N19/147 ,  H04N19/105 ,  H04N19/172 ,  H04L65/70 ,  H04L65/80

摘要： In some embodiments, a method receives a current encoding stream of a video. A first measurement for a reference encoding stream is selected to measure a quality of the reference encoding stream. The method compares a second measurement of the current encoding stream to the first measurement of the reference encoding stream and outputs whether the current encoding stream is validated based on the comparing.

公开(公告)号：US11616993B1

公开(公告)日：2023-03-28

申请号：US17508780

申请日：2021-10-22

申请人： HULU, LLC

发明人： Si Chen ,  Tongyu Dai ,  Lemei Huang ,  Deliang Fu ,  Wenhao Zhang

IPC分类号： H04N21/2343 ,  H04N21/234

摘要： In some embodiments, during playback of a video, using a parameter value of an adaptive bitrate algorithm to analyze playback of the video. The adaptive bitrate algorithm uses the parameter value to select a profile from a plurality of profiles to use to request segments of the video. A method selects a scenario in a plurality of scenarios when a playback condition meets a characteristic value of the scenario. The plurality of scenarios are associated with a different characteristic value. The method adjusts the parameter value of the adaptive bitrate algorithm based on the scenario to generate an adjusted parameter value. The plurality of scenarios have at least one different parameter value. The adjusted parameter value of the adaptive bitrate algorithm is used to analyze the playback of the video.

公开(公告)号：US20210227216A1

公开(公告)日：2021-07-22

申请号：US17225445

申请日：2021-04-08

申请人： HULU, LLC

发明人： Wenhao Zhang ,  Deliang Fu ,  Min Gao ,  Juncheng Ma ,  Chen Liu

IPC分类号： H04N19/105 ,  H04N19/577 ,  H04N19/159 ,  H04N19/176

摘要： In some embodiments, a method performs a first calculation to select an anchor point based on a first reference block in a first reference frame and a second reference block in a second reference frame. The first reference frame is selected as the anchor point. A third reference block in the second reference frame is selected based on the first reference frame being selected as the anchor point. The method performs a second calculation to select the anchor point based on the first reference block in the first reference frame and the third reference block in the second reference frame and determines whether to use the first reference block and the third reference block as a prediction for a current block based on the second calculation.