公开(公告)号：US11196790B2

公开(公告)日：2021-12-07

申请号：US17134069

申请日：2020-12-24

Applicant: NETFLIX, INC.

Inventor： Ioannis Katsavounidis

IPC: G06F15/16 ,  H04L29/06 ,  H04N19/154 ,  H04N19/176 ,  H04N19/59 ,  H04N19/87 ,  H04N21/238 ,  H04N21/2662

Abstract: In various embodiments, a subsequence-based encoding application generates a convex hull of subsequence encode points based on multiple encoding points and a first subsequence included in a set of subsequences that are associated with a media title. The subsequence-based encoding application then generates a first encode list that includes multiple subsequence encode points based on the first convex hull. Notably, each subsequence encode point included in the first encode list is associated with a different subsequence. The subsequence-based encoding application selects a first subsequence encode point included in the first encode list based on a first variability constraint that is associated with a media metric. The subsequence-based encoding application then replaces the first subsequence encode point included in the first encode list with a second subsequence encode point to generate a second encode list. Finally, the subsequence-based encoding application generates an encoded media sequence based on the second encode list.

公开(公告)号：US11184621B2

公开(公告)日：2021-11-23

申请号：US15902971

申请日：2018-02-22

Applicant: NETFLIX, INC.

Inventor： Ioannis Katsavounidis

IPC: G06K9/00 ,  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 ,  H04N19/126 ,  H04N19/15 ,  H04N19/40

Abstract: In various embodiments, an encoding optimization application encodes a source video sequence. The encoding optimization application partitions a source video sequence associated with a media title into multiple subsequences that include a first subsequence and a second subsequence. The encoding optimization application then generates a first encoded subsequence based on the first subsequence and a first resolution. The encoding optimization application generates a second encoded subsequence based on the second subsequence and a second resolution. Notably, the second resolution is higher than the first resolution. The encoding optimization application then aggregates the first encoded subsequence and the second encoded subsequence to generate an encoded video sequence. At least a portion of the encoded video sequence is subsequently streamed to an endpoint device during a playback of the media title.

公开(公告)号：US11166034B2

公开(公告)日：2021-11-02

申请号：US16543476

申请日：2019-08-16

Applicant: NETFLIX, INC.

Inventor： Ioannis Katsavounidis ,  Liwei Guo

IPC: H04N19/196 ,  H04N19/85

Abstract: In various embodiments, an encoder comparison application compares the performance of different configured encoders. In operation, the encoder comparison application generates a first global convex hull of video encode points based on a first configured encoder and a set of subsequences included in a source video sequence. Each video encode point is associated with a different encoded version of the source video sequence. The encoder comparison application also generates a second global convex hull of video encode points based on a second configured encoder and the subsequences. Subsequently, the encoder configuration application computes a performance value for an encoding comparison metric based on the first global convex hull and the second global convex hull. Notably, the first performance value estimates a difference in performance between the first configured encoder and the second configured encoder.

公开(公告)号：US11144707B2

公开(公告)日：2021-10-12

申请号：US16430125

申请日：2019-06-03

Applicant: NETFLIX, INC.

Inventor： Pedro Navarro

IPC: G06F17/00 ,  G06F40/109 ,  G06F40/131 ,  G06F8/65

Abstract: Various embodiments disclose a computer-implemented method that includes receiving, subsequent to a first font file being stored in read-only memory, a first font patch file for storage in read-write memory, where each of the first font file and the first font patch file is associated with a first font and includes a different set of glyphs used to render characters for display, and a first set of glyphs included in the first font file is static, determining that a first text string includes a first set of characters to be rendered, retrieving, from at least one of the first font file and the first font patch file depending on whether a first glyph is included in the first set of glyphs, the first glyph corresponding to a first character included in the first set of characters, and rendering a portion of the first text string using the first glyph.

公开(公告)号：US20210314274A1

公开(公告)日：2021-10-07

申请号：US17352070

申请日：2021-06-18

Applicant: Netflix, Inc.

Inventor： Lara Deek ,  Ishaan Shastri ,  Mohit Vora

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

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：US11122075B2

公开(公告)日：2021-09-14

申请号：US16576556

申请日：2019-09-19

Applicant: Netflix, Inc.

Inventor： Randall Stewart

IPC: H04L29/06 ,  H04W12/108 ,  H04W12/122 ,  H04W12/102 ,  H04W12/00 ,  H04W12/30 ,  H04W12/10

Abstract: The disclosed computer-implemented method includes applying transport protocol heuristics to selective acknowledgement (SACK) messages received at a network adapter from a network node. The transport protocol heuristics identify threshold values for operational functions that are performed when processing the SACK messages. The method further includes determining, by applying the transport protocol heuristics to the SACK messages received from the network node, that the threshold values for the transport protocol heuristics have been reached. In response to determining that the threshold values have been reached, the method includes identifying the network node as a security threat and taking remedial actions to mitigate the security threat. Various other methods, systems, and computer-readable media are also disclosed.

公开(公告)号：US20210160550A1

公开(公告)日：2021-05-27

申请号：US17164548

申请日：2021-02-01

Applicant: NETFLIX, INC.

Inventor： Ioannis KATSAVOUNIDIS

IPC: H04N21/231 ,  H04N21/235 ,  H04N21/236 ,  H04N21/2662

Abstract: In various embodiments, a buffer-based encoding application generates a first convex hull of subsequence encode points based on multiple encoding points and a first subsequence associated with a media title. The buffer-based encoding application then generates a first global convex hull of media encode points based on a transmission buffer constraint, the first convex hull, and a second global convex hull of media encode points. Notably, the second global convex hull is associated with a portion of the media title that occurs before the first subsequence in a playback order for the media title. Subsequently, the subsequence-based encoding application selects a first media encode point included in the first global convex hull based on a media metric and determines a first encoded media sequence based on the selected media encode point. The first encoded media sequence is subsequently streamed to an endpoint device during playback of the media title.

公开(公告)号：US11019374B2

公开(公告)日：2021-05-25

申请号：US16780752

申请日：2020-02-03

Applicant: NETFLIX, INC.

Inventor： Glenn Van Wallendael ,  Anne Aaron ,  Kyle Swanson ,  Jan De Cock ,  Liwei Guo ,  Sonia Bhaskar

IPC: G06F15/16 ,  H04N21/2343 ,  H04L29/06 ,  H04N19/587

Abstract: In various embodiments, an interpolation-based encoding application encodes a first subsequence included in a media title at each encoding point included in a first set of encoding points to generate encoded subsequences. Subsequently, the interpolation-based encoding application performs interpolation operation(s) based on the encoded subsequences to estimate a first media metric value associated with a first encoding point that is not included in the first set of encoding points. The interpolation-based encoding application then generates an encoding recipe based on the encoded subsequences and the first media metric value. The encoding recipe specifies a different encoding point for each subsequence included in the media title. After determining that the encoding recipe specifies the first encoding point for the first subsequence, the interpolation-based encoding application encodes the first subsequence at the first encoding point to generate at least a portion of an encoded version of the media title.

公开(公告)号：US11010341B2

公开(公告)日：2021-05-18

申请号：US15067099

申请日：2016-03-10

Applicant: NETFLIX, INC.

Inventor： Andrew Chen ,  Christopher Brand ,  Daniel Ellis ,  Alex Gutarin

IPC: G06F16/172 ,  G06F16/13 ,  G06F16/182 ,  H04L29/08

Abstract: One embodiment of the present invention sets forth a technique for replicating a file within a network of servers. The technique includes determining one or more regional master servers included in a regional cluster of servers and causing each regional master server to retrieve a file from a fill source. The technique further includes, for at least one local cluster of servers included in the regional cluster of servers, determining one or more local master servers included in the at least one local cluster of servers, and causing each local master server to retrieve the file from one of the one or more regional master servers.

公开(公告)号：US20210141712A1

公开(公告)日：2021-05-13

申请号：US16746795

申请日：2020-01-17

Applicant: Netflix, Inc.

Inventor： David Gevorkyan ,  Mehmet Yilmaz ,  Ajinkya More ,  Justin Derrick Basilico ,  Prasanna Padmanabhan ,  Vivek Kaushal ,  Gaurav Agrawa ,  Richard Wellington

IPC: G06F11/36 ,  G06F16/22

Abstract: The disclosed computer-implemented method may include accessing updated data structures that are to be included in a user interface functionality test, where the updated data structures contribute to a user interface. The method may also include accessing live or snapshotted data captured from services running in a production environment, initiating generation of a first user interface instance using the updated data structures and using the accessed live or snapshotted data, and initiating generation of a second user interface instance using a different version of the data structures and using the same accessed live or snapshotted data. The method further includes comparing the first user interface instance to the second user interface instance to identify differences and then determine which outcome-defining effects the updated data structures had on the user interface based on the identified differences between the user interfaces. Various other methods, systems, and computer-readable media are also disclosed.