Media File Grouping With Association Tags for Selective Decoding
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Solution Overview
Problem
Current video packing modes fail to efficiently decode media files containing multiple static panoramic images or point clouds due to the inability of file unpacking devices to determine the association between items, leading to low decoding efficiency.
Innovation Solution
The method involves packing code streams of N items, including point clouds and static panoramic images, into entity groups with added first indication information to indicate the association relations, allowing selective decoding of relevant items by the unpacking device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If code streams of multiple items are packed into entity groups without indication information, then the file structure is simple, but the file unpacking device cannot determine association relations between items, resulting in low decoding efficiency
Solution Approach 1:
The patent segments the media file into multiple entity groups, where each entity group contains code streams of multiple items with the same association relation. This segmentation allows the unpacking device to process items in manageable units rather than handling all items uniformly, improving decoding efficiency by enabling selective processing of specific entity groups based on indication information.
Solution Approach 2:
The patent introduces indication information as an intermediary element within each entity group. This indication information explicitly marks the association relations between items, serving as a mediator that guides the unpacking device in determining which items to decode and their relationships, thereby resolving the complexity issue while maintaining high decoding efficiency.
2Productivity
If indication information is added to each entity group to mark association relations, then the file unpacking device can determine item associations and improve decoding efficiency, but the file structure becomes more complex
Solution Approach 1:
The patent applies preliminary action by pre-organizing code streams into entity groups with embedded indication information during the packing phase. This preliminary structuring with association relation markers allows the unpacking device to efficiently determine item associations without complex runtime analysis, improving decoding efficiency while keeping the added structural complexity manageable and systematic.
3Reliability
If the file unpacking device decodes all items in an entity group, then complete media content is reconstructed, but the decoding time and computational resources increase
Solution Approach 1:
The patent enables partial action by allowing the unpacking device to selectively decode only the necessary items within an entity group based on the indication information, rather than decoding all items. This partial decoding approach maintains media content completeness for the required portions while significantly reducing decoding time and computational resource consumption by avoiding unnecessary processing of unrelated items.
Data Source
AI summary
The present subject matter provides a media file packing and unpacking method, apparatus and device, and a storage medium. Code streams after N items are coded. The items comprise point clouds or static panoramic images. N is a positive integer greater than 1. The code streams of the N items are packed into at least one entity group. A first indication information is added to the entity group with regard to each entity group in at least one entity group to obtain media files of the N items. The first indication information indicates the types of all items having an association relation in the entity group. The media files of the N items are transmitted to the file unpacking device.