FIXED TILE STRUCTURE FLAG INDICATING PARALLEL PROCESSING POSSIBILITY FOR A SEQUENCE OF COMPRESSED VIDEO

摘要

A method includes using a syntax element to indicate if tile information is the same for a sequence. The sequence is typically a bitstream for which one sequence parameter set (SPS) is valid. The syntax element can be part of the SPS or signaled such as in VUI or in an SEI message. Furthermore, the syntax element can be a flag, for example denoted tiles_fixed_structure_flag. The encoder decides how the pictures are divided by a tile structure enabling parallel encoding/decoding. When the same tile structure is used throughout a sequence, information that the same tile structure is used throughout a sequence of the video stream is sent to the decoder.

主权项

1. A method for encoding a sequence of pictures of a video stream of multiple pictures to be performed in an encoder, the method comprises:
deciding whether all the pictures in said sequence are divided in the same way by tiles using a tile structure, and sending information that the same tile structure is used throughout the sequence of the video stream based on deciding the same tile structure is used throughout the sequence of the video stream.