公开(公告)号：WO2022120100A1

公开(公告)日：2022-06-09

申请号：PCT/US2021/061678

申请日：2021-12-02

Applicant: BITMOVIN, INC.

Inventor： AMIRPOUR, Hadi ,  ÇETINKAYA, Ekrem ,  TIMMERER, Christian

IPC: G06T9/00 ,  G06N3/04 ,  G06N3/08 ,  H04N19/119 ,  H04N19/176 ,  H04N19/96 ,  H04N19/194

Abstract: According to embodiments of the disclosure, fast multi-rate encoding may be performed using machine learning by encoding a lowest quality representation to determine encoding parameters, processing raw data of the video using a neural network to obtain an intermediate output comprising encoding features, augmenting the intermediate output with additional encoding features to form a final tensor, and processing the final tensor with another neural network to obtain a classification output comprising a split or not split decision for an image data block. The classification output may be used to encode a highest quality representation, and then other representations of the video.

公开(公告)号：WO2021092412A2

公开(公告)日：2021-05-14

申请号：PCT/US2020/059448

申请日：2020-11-06

Applicant: BITMOVIN, INC.

Inventor： AMIRPOUR, Hadi ,  ÇETINKAYA, Ekrem ,  TIMMERER, Christian

IPC: H04N19/119 ,  H04N19/147 ,  H04N19/177 ,  H04N19/179 ,  H04N19/436 ,  H04L65/4084 ,  H04L65/602 ,  H04L65/607 ,  H04L65/608 ,  H04L65/80 ,  H04L67/02 ,  H04N19/146 ,  H04N19/176

Abstract: According to embodiments of the disclosure, information of higher and lower quality encoded video segments is used to limit Rate-Distortion Optimization (RDO) for each Coding Unit Tree (CTU). A method first encodes the highest bit-rate segment and consequently uses it to encode the lowest bit-rate video segment. Block structure and selected reference frame of both highest and lowest bit-rate video segments are used to predict and shorten RDO process for each CTU in middle bit-rates. The method delays just one frame using parallel processing. This approach provides time-complexity reduction compared to the reference software for middle bit-rates while degradation is negligible.

公开(公告)号：WO2022093535A1

公开(公告)日：2022-05-05

申请号：PCT/US2021/054823

申请日：2021-10-13

Applicant: BITMOVIN, INC.

Inventor： AMIRPOUR, Hadi ,  ERFANIAN, Alireza ,  TIMMERER, Christian ,  HELLWAGNER, Hermann

IPC: H04N19/40

Abstract: Disclosed are systems and methods for lightweight transcoding of video. A distributed computing system for lightweight transcoding includes an origin server and an edge node, the origin server having a memory and a processor and configured to receive an input video comprising a bitstream, encode the bitstream into a set of representations corresponding to a full bitrate ladder, generate encoding metadata for the set of representations, and provide a representation and encoding metadata for the set of representations to an edge node, the edge node having a memory and a processor and configured to transcode the bitstream, or segments thereof, into the set of representations, and to serve one or more of the representations to a client.