Media Data Processing Viewpoint Identification Metadata
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Solution Overview
Problem
Existing solutions struggle to differentiate and flexibly process media data corresponding to multiple viewpoints in omnidirectional media applications, particularly in streaming media systems, due to difficulties in identifying and managing metadata associated with different viewpoints.
Innovation Solution
A method and apparatus that utilize viewpoint identification information carried in metadata to process and selectively present media data, allowing for flexible switching between different viewpoints by obtaining and parsing metadata information, including viewpoint identification, position, and selection data within ISO base media file formats and streaming systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If media data from multiple viewpoints are stored together without differentiation, then storage is simple, but it becomes difficult to differentiate and flexibly process media data at different viewpoints
Solution Approach 1:
The patent segments media data into distinct viewpoint groups by inserting viewpoint group identification information into metadata boxes. This allows media data from different viewpoints to be differentiated and processed independently while maintaining organized storage structure.
Solution Approach 2:
The patent introduces viewpoint group identification information as an intermediary element in the metadata structure. This intermediary enables the system to identify and differentiate between media data from different viewpoints without requiring complex processing logic.
2Loss of information
If viewpoint identification information is added to metadata, then media data can be differentiated by viewpoint, but metadata structure becomes more complex
Solution Approach 1:
The patent nests viewpoint group identification information within the existing metadata box structure. The viewpoint identification is embedded as a field within the metadata box that describes media data samples, allowing viewpoint information to be stored without creating a completely separate complex structure.
3Adaptability or versatility
If all media data is processed uniformly, then processing is simple, but flexible switching between different viewpoints cannot be achieved
Solution Approach 1:
The patent enables dynamic viewpoint switching by allowing the system to identify and process only the specific viewpoint group needed at any given time. The playback device can dynamically select which viewpoint group to process based on user selection or application requirements, improving processing efficiency while maintaining flexibility.
Data Source
AI summary
This application provides a media data processing method and apparatus. A media processing device receives a media stream. The media stream includes media data recorded at a plurality of viewpoints. The device obtains metadata information of the media stream. The metadata information includes viewpoint identification information of the viewpoints. The device displays media data of a first viewpoint based on the viewpoint identification information. The device also displays indications of other viewpoints when displaying the media data of the first viewpoint, so that a user of the device can switch to display media data of other viewpoints.