Adaptive GOP Length Control Using Video Layer Geometry Changes
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Solution Overview
Problem
Existing video coding technologies face challenges in efficiently compressing high-quality video data due to the large amount of data required, particularly in scenarios like WiFi display sharing, where fixed length GOPs can decrease efficiency and are computationally intensive.
Innovation Solution
Implementing variable intra-frame (I-frame) time intervals and variable group of pictures (GOP) lengths based on video frame layer information and geometry, using layer properties to adaptively determine optimal coding strategies without intensive content analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fixed length GOP is used for video coding, then coding structure is simple, but video coding efficiency decreases and computational complexity increases
Solution Approach 1:
The patent implements variable GOP length by dynamically adjusting the I-frame time interval based on layer geometry changes detected in the video data. Instead of using a fixed GOP structure, the system adapts the coding parameters in real-time according to content characteristics, resolving the contradiction between coding efficiency and computational complexity
Solution Approach 2:
The patent changes the GOP length parameter dynamically based on detected layer geometry changes. By monitoring geometric properties of layers and adjusting the I-frame interval accordingly, the system optimizes coding efficiency without requiring excessive computational resources for content analysis
2Productivity
If variable GOP length is implemented based on content analysis, then video coding efficiency improves, but computational complexity and power consumption increase
Solution Approach 1:
The patent extracts only the essential layer geometry information from video frames to determine GOP length adjustments. By focusing on specific geometric properties rather than performing comprehensive content analysis, the system achieves variable GOP coding with reduced computational and energy costs
Solution Approach 2:
The patent performs partial content analysis by examining only layer geometry changes rather than analyzing all video content characteristics. This selective approach provides sufficient information for GOP optimization while significantly reducing the computational and energy burden
Data Source
AI summary
Systems and techniques are provided for processing video data. For example, a process can include obtaining a frame of video data associated with a display of a computing device, wherein the frame of video data includes one or more layers. Layer information associated with the one or more layers included in the frame of video data can be compared with layer information associated with one or more layers included in a previous frame of video data. Based on determining a frame geometry change associated with the frame of video data, an inter-predicted frame can be generated using the frame of video data. An updated group of pictures (GOP) length can be determined based on the layer information associated with the one or more layers included in the frame of video data.