公开(公告)号：WO2019099621A1

公开(公告)日：2019-05-23

申请号：PCT/US2018/061214

申请日：2018-11-15

Applicant: BITMOVIN, INC.

Inventor： FELDMANN, Christian ,  SMOLE, Martin ,  MUELLER, Christopher ,  WEINBERGER, Daniel ,  TRATTNIG, Armin

IPC: G06F15/16

Abstract: A video streaming system optimizes the buffering of periods of frames of a video presentation in order to achieve a more constant perceptual quality throughout the entire video presentation. An adaption algorithm determines transmission bitrates to transmit some periods at a lower bitrate that the channel conditions of the channel may allow while transmitting other periods at a higher bitrate. The transmission bitrates are determined based on expected quality metadata signaled in the periods of the bitstream for the current period and following periods in order to optimize the bitrate and the expected perceptual quality of each version of each period over time.