CPC H04N 19/187 (2014.11) [H04N 19/102 (2014.11); H04N 19/119 (2014.11); H04N 19/12 (2014.11); H04N 19/139 (2014.11); H04N 19/174 (2014.11); H04N 19/30 (2014.11); H04N 19/33 (2014.11); H04N 19/436 (2014.11); H04N 19/46 (2014.11); H04N 19/59 (2014.11); H04N 19/70 (2014.11); H04N 19/80 (2014.11); H04N 19/156 (2014.11)] | 14 Claims |
1. A video decoder for decoding a multi-layer video data stream into which a video is coded in layers using inter-layer prediction from a first layer to a second layer, the video decoder comprising a processor configured to:
decode a long-term syntax element of the multi-layer video data stream, wherein the long-term syntax element indicates whether one or more spatial regions in pictures of the first layer are not used for inter-layer prediction for decoding of a picture of the second layer in a predetermined time period;
based on the decoding of the long-term syntax element indicating that the one or more spatial regions in pictures of the first layer are not used for inter-layer prediction for decoding of the picture of the second layer,
periodically determine, in time intervals smaller than the predetermined time period, a number of the one or more spatial regions in each picture of the first layer that are not used for inter-layer prediction for decoding of the picture of the second layer based on first short-term syntax elements of the multi-layer video data stream; and
periodically determine, in the time intervals smaller than the predetermined time period, sizes and locations of the spatial regions of the pictures of the first layer and spatial regions of pictures of the second layer, and spatial sampling resolutions of the pictures of the first layer and the pictures of the second layer, respectively, based on second short-term syntax elements of the multi-layer video data stream.
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