Media File Operating-Point Signaling for Layered Video Efficiency
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Solution Overview
Problem
The increasing demand for high-resolution and high-quality images, such as 360-degree images, leads to higher storage and transmission costs due to increased file capacity and frame rates, while hardware and network resources for multimedia services are limited in mobile devices.
Innovation Solution
A media file generating and receiving method and apparatus that processes video data based on operating point information, including the number of output layer sets and operating points, to enhance file processing efficiency and prevent redundancy in output layer set information, thereby improving transmission and reception efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-resolution and high-quality images (such as 360-degree images) are processed and transmitted, then image quality and resolution are improved, but storage cost and transmission cost increase
Solution Approach 1:
The patent segments video data into multiple layers with different quality levels (first layer, second layer, etc.). Each layer represents a different resolution or quality tier, allowing the system to transmit and store only the necessary quality level based on available resources. This segmentation enables high-quality images to be processed efficiently by breaking them into manageable layers that can be selectively transmitted.
Solution Approach 2:
The patent changes the quality parameter of video data by creating multiple output layer sets with different resolution and quality characteristics. By adjusting these parameters dynamically, the system can maintain high image quality when resources permit while reducing storage and transmission costs when resources are constrained, thus resolving the contradiction between quality and cost.
2Measurement precision
If high-resolution and high-quality images (such as 360-degree images) are processed and transmitted, then image quality and resolution are improved, but transmission cost increases
Solution Approach 1:
The patent divides video data into multiple layers and transmits them as separate output layer sets. This segmentation allows the transmission system to send only the necessary quality level based on network conditions and device capabilities, reducing unnecessary transmission costs while maintaining high image quality when needed.
Solution Approach 2:
The patent enables dynamic selection of output layer sets based on real-time network conditions and device resources. The system can adaptively choose which layers to transmit, switching between high-quality and low-quality transmission modes as needed, thus optimizing transmission cost while preserving image quality capability.
3Loss of information
If multiple output layer sets are transmitted without optimization, then complete video information is provided, but redundancy increases and processing efficiency decreases
Solution Approach 1:
The patent extracts and transmits only the necessary output layer sets based on operating point information, removing redundant data. By identifying and eliminating unnecessary layers, the system maintains complete video information while significantly reducing redundancy, thus improving processing efficiency without losing essential video content.
Solution Approach 2:
The patent performs preliminary organization of video data into structured output layer sets with associated operating point information before transmission. This pre-processing enables the receiving device to efficiently identify and process only the necessary layers, improving overall processing efficiency while ensuring complete video information is preserved.
4Measurement precision
If detailed operating point information is transmitted, then video processing accuracy is improved, but file size and transmission overhead increase
Solution Approach 1:
The patent uses parameter-based representation for operating point information, encoding essential video processing parameters in a compact format. By changing from detailed descriptive data to condensed parameter representation, the system maintains video processing accuracy while significantly reducing file size and transmission overhead.
Data Source
AI summary
A media file generating/receiving method and apparatus for signaling operating point information and a method of transmitting a media file are provided. A media file receiving method comprises obtaining operating point information of video data from a media file and processing the video data based on the obtained operating point information. The obtaining the operating point information may comprise obtaining first information specifying a number of output layer sets for the video data, obtaining second information on the output layer sets based on the first information, obtaining third information specifying a number of operating points for the output layer sets, and obtaining fourth information on output layer sets associated with the operating points based on the third information.