公开(公告)号：US11770546B2

公开(公告)日：2023-09-26

申请号：US17122753

申请日：2020-12-15

申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

发明人： Robert Skupin ,  Yago Sánchez De La Fuente ,  Thomas Schierl ,  Cornelius Hellge ,  Karsten Grüneberg ,  Thomas Wiegand

IPC分类号： H04N19/33 ,  H04N19/174 ,  H04N19/88 ,  H04N19/132 ,  H04N19/146 ,  H04N19/46 ,  H04N19/119 ,  H04N19/167 ,  H04N19/70 ,  H04N19/34

CPC分类号： H04N19/33 ,  H04N19/119 ,  H04N19/132 ,  H04N19/146 ,  H04N19/167 ,  H04N19/174 ,  H04N19/34 ,  H04N19/46 ,  H04N19/70 ,  H04N19/88

摘要： A video data stream is rendered reducible in a manner so that the reduction leads to a restriction of pictures of the reduced video data stream to merely a predetermined subarea of the pictures of the original video data stream and in a manner so that transcoding, such as re-quantization, may be avoided and a conformance of the reduced video data stream relative to the codec underlying the original video data stream be maintained. This is achieved by providing the video data stream with information including an indication of the predetermined subarea and replacement indices for redirecting the indices included by the payload portion so as to refer to, and/or replacement parameters for adjusting the first set of coding parameter settings so as to result in, a second set of coding parameter settings.