Video Frame Slicing for Balanced Parallel Encoding
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Solution Overview
Problem
Current video encoding standards fail to consider video content balance, leading to unbalanced encoding performance in slices, which affects encoding delays and speeds, reducing overall video encoding efficiency.
Innovation Solution
Predict encoding performance of a current video frame based on a previous frame's slicing solution to determine a more balanced slicing solution for that frame, adjusting slice areas to optimize encoding performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If even segmentation is used for slice segmentation, then segmentation simplicity is improved, but encoding performance balance deteriorates
Solution Approach 1:
The patent applies local quality by using content-aware segmentation that adapts to local video characteristics. Different regions of the video frame are segmented based on their specific content complexity and motion characteristics, rather than applying uniform segmentation across the entire frame. This allows encoding parameters and slice boundaries to be optimized for each local region's specific needs.
Solution Approach 2:
The patent implements dynamics by making the segmentation strategy adaptive and variable based on content. The segmentation approach transitions from static even segmentation to dynamic content-aware segmentation that adjusts slice boundaries and encoding parameters according to the actual video content, motion patterns, and complexity variations across different frames and regions.
2Speed
If parallel encoding is performed on multiple slices, then encoding speed is improved, but encoding delay balance deteriorates
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting encoding parameters for different slices based on their content characteristics. Each slice can have optimized encoding parameters such as quantization parameters, transform settings, and prediction modes that match its specific content complexity, allowing faster encoding of simple regions while maintaining quality in complex regions.
Solution Approach 2:
The patent uses segmentation to divide the video frame into multiple independent slices that can be encoded in parallel. By carefully designing slice boundaries based on content awareness, the patent ensures that slices with similar encoding complexities are grouped together, enabling balanced parallel processing and reducing overall encoding delay.
3Productivity
If content-aware slicing is implemented, then encoding performance balance is improved, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by performing content analysis and segmentation planning before the actual encoding process. Video frames are pre-analyzed for motion patterns, complexity distribution, and content characteristics, and slice boundaries are predetermined based on this analysis. This preliminary preparation enables balanced encoding without adding complexity during the actual encoding execution phase.
Solution Approach 2:
The patent implements feedback mechanisms where encoding performance metrics from previous frames are used to adjust and optimize segmentation strategies for current frames. The system continuously monitors encoding delays, quality metrics, and resource utilization, using this feedback to refine slice boundaries and encoding parameters, achieving balanced performance through iterative optimization rather than complex real-time control.
Data Source
AI summary
A method for performing video encoding comprises obtaining a first slicing solution of a first video frame; determining encoding performance prediction values of N second slices obtained when the first slicing solution is used for a second video frame; determining a second slicing solution of the second video frame based on the encoding performance prediction values of the N second slices; segmenting the second video frame into N third slices according to the second slicing solution; and separately encoding the N third slices.