公开(公告)号：US10999578B2

公开(公告)日：2021-05-04

申请号：US16612889

申请日：2017-12-12

Applicant: Google LLC

Inventor： Chao Chen ,  Balineedu Adsumilli ,  Shawn Singh ,  Yilin Wang

IPC: H04N19/124 ,  H04N19/103 ,  H04N19/154 ,  H04N19/172 ,  H04N19/176 ,  H04N19/61

Abstract: Systems and methods for transcoding media content are disclosed. In some embodiments, the method includes obtaining a transcoded media content that is transcoded from an uploaded media content. The method includes determining a plurality of degradation metric values corresponding to the transcoded media content based on the uploaded media content and the transcoded media content, each degradation metric value corresponding to a different degradation metric type. The method includes mapping each degradation metric value to a respective calibrated score to obtain a plurality of calibrated scores. The method includes determining an aggregated quality score of the transcoded media content based on the plurality of calibrated scores and an exponential weighting function. The exponential weighting function exponentiates each of the calibrated scores by a respective weighting exponent and aggregates the exponentiated calibrated scores. The method includes selectively reencoding the transcoded media content based on the aggregated quality score.