公开(公告)号：US20210250545A1

公开(公告)日：2021-08-12

申请号：US17244943

申请日：2021-04-29

Applicant: Netflix, Inc.

Inventor： Weiguo Zheng ,  Rex Yik Chun Ching

IPC: H04N7/01 ,  G09G5/00 ,  G09G5/18

Abstract: The disclosed method includes accessing video content encoded at a specified frame rate, and determining a refresh rate for an electronic display on which the video content is to be presented. The method next includes specifying a time interval for the video content over which frame rate conversion is to be applied to synchronize the video content frame rate with the electronic display refresh rate. The method also includes presenting the video content on the electronic display where the playback speed is adjusted for a first part of the interval. At this adjusted speed, the interval is played back using original video frames and multiple frame duplications. The presenting also adjusts playback speed of a second part of the interval. At the adjusted speed, the interval is played back using the original frames and a different number of frame duplications. Various other methods, systems, and computer-readable media are also disclosed.

公开(公告)号：US11086960B2

公开(公告)日：2021-08-10

申请号：US16926555

申请日：2020-07-10

Applicant: NETFLIX, INC.

Inventor： Christopher Newton

IPC: G06F16/955 ,  G06F16/957 ,  G06F21/64 ,  H04L29/08

Abstract: Various embodiments of the present disclosure relate to a computer-implemented method of receiving an invalidation command that includes a first asset identifier, and a set of extension value fields, identifying a first file that is stored in a first cache device and is associated with an identifier matching the first asset identifier, comparing attributes of the first file to the set of extension value fields, and upon determining that, for each extension value field, at least one attribute of the first file matches at least one value of the extension value field, causing the first file in the first cache device to be preserved, or upon determining that, for at least one extension value, at least one attribute of the first file does not match at least one value of the extension value field, causing the first file to be invalidated.

公开(公告)号：US11070485B2

公开(公告)日：2021-07-20

申请号：US16705035

申请日：2019-12-05

Applicant: Netflix, Inc.

Inventor： Lara Deek ,  Ishaan Shastri ,  Mohit Vora

IPC: H04L12/911 ,  H04N21/238 ,  H04L12/803 ,  H04L29/06 ,  H04N21/2665 ,  H04N21/472 ,  H04L29/08

Abstract: The disclosed computer-implemented method includes accessing information related to a playback session in which at least a portion of requested multimedia content is streamed over a network to a client electronic device. The method further includes accessing network topology information for the network to identify which route through the network was used to provide the requested multimedia content during the playback session, including indicating which end node was used to provide the multimedia content. Still further, the method includes accessing network steering factors that indicate why the requested multimedia content was steered through the identified network route, determining, based on the network steering factors, which end node would have been more suited to providing the requested multimedia content for the playback session, and then transferring the requested multimedia content to the determined end node for provisioning during subsequent playback sessions. Various other methods, systems, and computer-readable media are also disclosed.

公开(公告)号：US11068404B2

公开(公告)日：2021-07-20

申请号：US16389885

申请日：2019-04-19

Applicant: NETFLIX, INC.

Inventor： Matthew Seeley ,  Kim Trott ,  Matthew McCarthy ,  Dylan Oudyk ,  Sam Magnuson ,  Jan Hanssen

IPC: G06F12/0875 ,  G06F12/02 ,  G06F12/123 ,  H04N19/46 ,  H04N19/423

Abstract: In an embodiment, a data processing method provides an improvement in efficient use of computer memory and comprises using a computer, creating in computer memory a glyph memory area that is configured to store a plurality of cached glyphs; using the computer, receiving a request from an application to use a particular glyph; in response to the request, determining whether the particular glyph is in the glyph memory area; in response to determining that the particular glyph is not in the glyph memory area: attempting to store a bitmap of the particular glyph to a next location in the glyph memory area; in response to determining that the next location is not available a first time, reclaiming space in the glyph memory area in an amount sufficient to store the bitmap; attempting a second time to store the bitmap in the next location in the glyph memory area; in response to determining that the next location is not available a second time, clearing the glyph memory area of all previously stored glyphs and storing the bitmap in the glyph memory area.

公开(公告)号：US20210168184A1

公开(公告)日：2021-06-03

申请号：US17174317

申请日：2021-02-11

Applicant: Netflix, Inc.

Inventor： Mohammad Hossein Taghavi ,  Prasanna Padmanabhan ,  Dong-Bang Tsai ,  Faisal Zakaria Siddiqi ,  Justin Derrick Basilico

IPC: H04L29/06 ,  H04L29/08 ,  G06N5/04 ,  G06N20/00

Abstract: A system for utilizing models derived from offline historical data in online applications is provided. The system includes a processor and a memory storing machine-readable instructions for determining a set of contexts of the usage data, and for each of the contexts within the set of contexts, collecting service data from services supporting the media service and storing that service data in a database. The system performing an offline testing process by fetching service data for a defined context from the database, generating a first set of feature vectors based on the fetched service data, and providing the first set to a machine-learning module. The system performs an online testing process by fetching active service data from the services supporting the media streaming service, generating a second set of feature vectors based on the fetched active service data, and providing the second set to the machine-learning module.

公开(公告)号：US20210160510A1

公开(公告)日：2021-05-27

申请号：US17170661

申请日：2021-02-08

Applicant: NETFLIX, INC.

Inventor： Ioannis KATSAVOUNIDIS

IPC: H04N19/147 ,  H04N19/172 ,  H04N19/192 ,  H04N19/124 ,  H04N21/2343 ,  H04N21/238 ,  H04N19/179 ,  H04N21/845 ,  H04N21/234 ,  H04L29/06 ,  H04N19/177 ,  G11B20/00 ,  G11B27/30 ,  G11B27/34 ,  H04N19/196 ,  H04N19/59

Abstract: In various embodiments, an iterative encoding application encodes a source video sequence. The encoding optimization application generates a set of shot encode points based on a set of encoding points and a first shot sequence included in the source video sequence. Each shot encode point is associated with a different encoded shot sequence. The encoding optimization application performs convex hull operation(s) across the set of shot encode points to generate a first convex hull associated with the first shot sequence. Subsequently, the encoding optimization application generates encoded video sequences based on the first convex hull and a second convex hull associated with a second shot sequence included in the source video sequence. The encoding optimization application computes a new encoding point based on the encoded video sequences and a target value for a first video metric and then generates an optimized encoded video sequence based on the new encoding point.

公开(公告)号：US11017024B2

公开(公告)日：2021-05-25

申请号：US15247026

申请日：2016-08-25

Applicant: Netflix, Inc.

Inventor： Justin D. Basilico

IPC: G06F16/00 ,  G06F16/735 ,  G06N20/00 ,  G06F16/2457

Abstract: A content provider system ranks media content items with respect to a particular user based on selection scores determined for each of the media content items. The selection scores may be determined using a particular model that calculates a predicted selection score based on feature values associated with the content item with respect to the particular user. The feature values may indicate properties of the media content item, the particular user, or the particular user's relationship with the content item, including information about the novelty of the media content item with respect to the user. The particular model may be trained with sample user consumption data points that represent various combinations of media content items and users. The data point information evaluated during the training of the particular model may cause the model to assign higher selection scores to content items that are novel in particular ways.

公开(公告)号：US20210144442A1

公开(公告)日：2021-05-13

申请号：US17095486

申请日：2020-11-11

Applicant: Netflix, Inc.

Inventor： Dong Liu ,  Lezi Wang ,  Rohit Puri

IPC: H04N21/466 ,  H04N21/845 ,  G06N20/00 ,  H04N21/44 ,  G06K9/00

Abstract: The disclosed computer-implemented method may include accessing media segments that correspond to respective media items. At least one of the media segments may be divided into discrete video shots. The method may also include matching the discrete video shots in the media segments to corresponding video shots in the corresponding media items according to various matching factors. The method may further include generating a relative similarity score between the matched video shots in the media segments and the corresponding video shots in the media items, and training a machine learning model to automatically identify video shots in the media items according to the generated relative similarity score between matched video shots. Various other methods, systems, and computer-readable media are also disclosed.

公开(公告)号：US20210127123A1

公开(公告)日：2021-04-29

申请号：US17141067

申请日：2021-01-04

Applicant: NETFLIX, INC.

Inventor： Anush MOORTHY ,  Megha MANOHARA

IPC: H04N19/179 ,  H04N19/436 ,  H04N19/115 ,  H04N19/85 ,  H04N21/845 ,  H04N19/146

Abstract: In various embodiments, a shot collation application causes multiple encoding instances to encode a source video sequence that includes at least two shot sequences. The shot collation application assigns a first shot sequence to a first chunk. Subsequently, the shot collation application determines that a second shot sequence does not meet a collation criterion with respect to the first chunk. Consequently, the shot collation application assigns the second shot sequence or a third shot sequence derived from the second shot sequence to a second chunk. The shot collation application causes a first encoding instance to independently encode each shot sequence assigned to the first chunk. Similarly, the shot collation application causes a second encoding instance to independently encode each shot sequence assigned to the second chunk. Finally, a chunk assembler combines the first encoded chunk and the second encoded chunk to generate an encoded video sequence.

公开(公告)号：US20210127120A1

公开(公告)日：2021-04-29

申请号：US17141081

申请日：2021-01-04

Applicant: NETFLIX, INC.

Inventor： Zhi LI ,  Christos BAMPIS

IPC: H04N19/154 ,  H04N19/91 ,  H04N21/235 ,  G06N3/08 ,  G06K9/62 ,  G06N3/04 ,  G06N20/20 ,  G06N20/10 ,  G06N5/00 ,  H04N17/00

Abstract: In various embodiments, a prediction application computes a quality score for re-constructed visual content that is derived from visual content. The prediction application generates a frame difference matrix based on two frames included in the re-constructed video content. The prediction application then generates a first entropy matrix based on the frame difference matrix and a first scale. Subsequently, the prediction application computes a first value for a first temporal feature based on the first entropy matrix and a second entropy matrix associated with both the visual content and the first scale. The prediction application computes a quality score for the re-constructed video content based on the first value, a second value for a second temporal feature associated with a second scale, and a machine learning model that is trained using subjective quality scores. The quality score indicates a level of visual quality associated with streamed video content.