Video Decoder Library Picture Bitstream Parameter Sharing
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Solution Overview
Problem
Existing video decoding methods are not flexible and suffer from low decoding efficiency due to the need for separate decoders to handle library picture and video bitstreams.
Innovation Solution
A method that allows decoding of a video bitstream by referencing a library picture bitstream, where a flag is parsed from the video bitstream to determine if the decoding capability information from the sequence header can be used for the library picture bitstream, enabling efficient reconstruction of the library picture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If two separate decoders are invoked to decode the library picture bitstream and video bitstream respectively, then the decoding process can be completed, but the decoding efficiency is low and the process is not flexible
Solution Approach 1:
The patent merges the decoding of library picture bitstream and video bitstream into a single decoder. The decoder first decodes the library picture bitstream to obtain a library picture, then uses this library picture as reference for decoding the video bitstream. This consolidation eliminates the need for separate decoders and improves decoding efficiency while maintaining flexibility through parameter sharing mechanisms.
2Productivity
If parameters are shared between video bitstream and library picture bitstream, then decoding efficiency is enhanced, but the complexity of parameter management increases
Solution Approach 1:
The patent implements parameter sharing where the sequence header parameters of the video bitstream are universally applied to both the video bitstream decoding and the library picture bitstream decoding. The decoder uses a single set of parameters for both decoding operations, eliminating the need for separate parameter sets and simplifying parameter management while enhancing decoding efficiency through reduced redundancy.
Data Source
AI summary
A video encoding method, a video decoding method, an apparatus, a device, and a storage medium include parsing a first flag from the video bitstream when a video bitstream is allowed to be decoded by referencing a library picture corresponding to a library picture bitstream, using a value of a target parameter of the video bitstream as a value of a target parameter of the library picture bitstream referenced by the video bitstream when a value of the first flag is a first value, and reconstructing, based on the value of the target parameter of the library picture bitstream referenced by the video bitstream and the library picture bitstream referenced by the video bitstream to obtain the library picture corresponding to the library picture bitstream referenced by the video bitstream.