NAL Unit Configuration for Lower-Overhead Media File Reconstruction
Find Innovative SolutionsGenerate Solutions
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, necessitating high-efficiency image compression and file processing technologies.
Innovation Solution
A method and apparatus for generating and receiving media files that effectively encode and decode NAL unit information, excluding specific types of NAL unit numbers and values, and transmitting these files to ensure correct sample reconstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high-resolution and high-quality images are processed, then image quality is improved, but storage cost and transmission cost increase
Solution Approach 1:
The patent extracts and removes unnecessary NAL unit number information (specifically, the first information specifying the number of NAL units with non-VCL NAL unit types) from the decoder configuration record. This extraction reduces the amount of data that needs to be stored and transmitted while maintaining the essential information needed for correct sample reconstruction, thereby resolving the contradiction between image quality and storage/transmission cost.
2Manufacturing precision
If high-resolution and high-quality images are processed, then image quality is improved, but transmission cost increases
Solution Approach 1:
The patent extracts and removes unnecessary NAL unit number information from the decoder configuration record before transmission. By eliminating redundant data elements (the first information about NAL unit counts), the transmission size is reduced, leading to lower transmission costs and energy consumption while preserving the quality of reconstructed images through retained essential NAL unit type information.
3Reliability
If NAL unit information is fully encoded, then sample reconstruction accuracy is improved, but data size increases
Solution Approach 1:
The patent selectively extracts and removes redundant NAL unit number information (the first information specifying counts of non-VCL NAL units) while retaining essential NAL unit type information. This selective extraction maintains sample reconstruction accuracy by preserving the critical NAL unit type data needed for proper decoding, while reducing overall data size by eliminating redundant count information.
Solution Approach 2:
The patent discards redundant NAL unit number information that does not contribute to sample reconstruction accuracy, while recovering and preserving the essential NAL unit type information. This selective discarding and recovering approach ensures that only necessary data is retained for accurate sample reconstruction, thereby reducing data size without compromising reliability.
Data Source
AI summary
Disclosed herein are a method and apparatus for generating/receiving a media file including NAL unit information and a method of transmitting a media file. A media file receiving method may comprise obtaining network abstraction layer (NAL) unit information of video data from a decoder configuration record in a media file and processing the video data based on the NAL unit information. The NAL unit information may comprise first information specifying a number of NAL units having a NAL unit type indicated in the decoder configuration record, for a stream to which the decoder configuration record is applied, and based on the indicated NAL unit type being a predetermined non-video coding layer (non-VCL) NAL unit type, obtaining of the first information may be skipped.