Video Coding Layer Identification for Higher Compression Ratios
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing video coding technologies face challenges in achieving improved compression ratios with minimal sacrifice in picture quality, particularly in scenarios with limited network bandwidth and memory resources.
Innovation Solution
The method involves determining the identifier of the current video coding layer using the NAL unit for single-layer bitstreams and parsing the bitstream for multiple layers, enabling efficient signaling and construction of reference picture lists to enhance decoding and encoding processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If video data is compressed to reduce data size for transmission or storage, then the quantity of data is decreased, but picture quality may be sacrificed
Solution Approach 1:
The video data is divided into multiple layers with different quality levels. The encoder can selectively encode and transmit only the necessary layers based on available bandwidth and storage resources, achieving compression without sacrificing the quality of essential video content. This segmentation allows flexible quality adjustment while maintaining efficient data utilization.
2Quantity of substance
If video compression is increased to improve compression ratio, then data size is reduced, but decoding complexity increases
Solution Approach 1:
The decoding complexity is dynamically adjusted based on the number of layers present in the compressed video data. When video data contains only a single layer, the decoder simplifies the identification process by directly using the NAL unit identifier as the video coding layer identifier, avoiding unnecessary parsing operations. This dynamic adaptation reduces decoding complexity while maintaining high compression ratios.
3Adaptability or versatility
If multiple video coding layers are used to improve quality flexibility, then adaptability is improved, but identification and signaling complexity increases
Solution Approach 1:
The patent extracts and utilizes the NAL unit identifier, which is already present in the compressed bitstream, to serve as the video coding layer identifier when only a single layer is present. This eliminates the need for separate identifier signaling mechanisms, reducing signaling complexity while maintaining the ability to handle multiple layers when quality flexibility is required.
Data Source
AI summary
A system and method of decoding of a video or picture bitstream implemented by a decoding device are described. The bitstream can include data representing a current video coding layer. Furthermore, when determining that the current video coding layer is the only one layer in the bitstream, the method can include using the identifier of a NAL unit of the current video coding layer as the identifier of the current video coding layer.