公开(公告)号：WO2018231736A1

公开(公告)日：2018-12-20

申请号：PCT/US2018/036976

申请日：2018-06-11

Applicant: NETFLIX, INC.

Inventor： MAVLANKAR, Aditya ,  KATSAVOUNIDIS, Ioannis ,  WATSON, Mark

IPC: H04N19/172 ,  H04N19/114 ,  H04N21/2343 ,  H04N21/262 ,  H04N21/438

Abstract: One embodiment of the invention sets forth a mechanism for encoding video streams associated with the same digital content such that switch points staggered across two video streams occur at every offset temporal distance. The offset temporal distance is less than the distance between two consecutive key frames in a given video stream. This enables a content player to switch to a video stream having a playback quality up or down one level from a current video stream at the offset temporal distance from the most recently played key frame. In effect, the content player does not wait the entire key frame temporal distance before switching.

公开(公告)号：WO2022173687A1

公开(公告)日：2022-08-18

申请号：PCT/US2022/015455

申请日：2022-02-07

Applicant: NETFLIX, INC.

Inventor： MOORTHY, Anush ,  LI, Zhi ,  GUO, Liwei ,  MAVLANKAR, Aditya ,  AARON, Anne

IPC: H04N21/234 ,  H04N19/10 ,  H04N21/2343 ,  H04N21/2662 ,  H04N21/845

Abstract: In various embodiments, an encoding ladder application generates encoding ladders for encoding media titles. In operation, the encoding ladder application generates a first convex hull representing encoding tradeoffs between quality and bitrate when encoding a media title at a first resolution. The encoding ladder application generates a second convex hull representing encoding tradeoffs between quality and bitrate when encoding the media title at a second resolution. Based on the first convex hull and the second convex hull, the encoding ladder application generates an overall convex hull. Subsequently, the encoding ladder application generates an encoding ladder for the media title based on at least the overall convex hull and a ladder requirement. Advantageously, the tradeoffs between quality and bitrate represented by the encoding ladder are customized for the media title. Consequently, encoding inefficiencies attributable to conventional fixed-bitrate ladders can be reduced.

公开(公告)号：WO2021113181A1

公开(公告)日：2021-06-10

申请号：PCT/US2020/062606

申请日：2020-11-30

Applicant: NETFLIX, INC.

Inventor： MAVLANKAR, Aditya

IPC: H04N19/124 ,  H04N19/154 ,  H04N19/172 ,  H04N19/192

Abstract: In various embodiments, an image encoding application determines a first value for an encoding parameter based on a search interval. The image encoding application then encodes a source image using the first value for the encoding parameter to generate a first encoded image. Subsequently, the image encoding application computes a visual quality score for a first reconstructed source image derived from the first encoded image. The image encoding application reduces the search interval based on a comparison between the visual quality score and the target visual quality score. Based on the resulting reduced search interval, the image encoding application determines a second value for the encoding parameter. The image encoding application encodes the source image using the second value for the encoding parameter to generate a second encoded image. Subsequently, the image encoding application transmits the second encoded image to software application(s) for further processing and display.

公开(公告)号：WO2020018639A1

公开(公告)日：2020-01-23

申请号：PCT/US2019/042155

申请日：2019-07-17

Applicant: NETFLIX, INC.

Inventor： MAVLANKAR, Aditya ,  KATSAVOUNIDIS, Ioannis

IPC: G11B27/10 ,  H04N21/472 ,  H04N21/6587 ,  G11B27/00

Abstract: A computer-implemented method includes receiving a request from a client computing device for a first shot included in a media title being streamed to the client computing device for playback; in response to the request, sending the first shot to the client computing device for playback; and sending a representative image for at least one of the first shot and a second shot included in the media title, wherein the first shot comprises a first sequence of video frames that is included in the media title and captured continuously from a first point of capture, and the second shot comprises a second sequence of video frames that is included in the media title and captured continuously from a second point of capture.