UMID Embedding in Video Files for Data Relationship Maintenance
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Solution Overview
Problem
Conventional digital video recording systems face challenges in maintaining the relationship between high-resolution and low-resolution video and audio data files, especially when managed separately, due to issues with time code information and file naming, which can be disrupted during editing operations.
Innovation Solution
A digital video recording system that includes a recording apparatus and an editing apparatus, where high-resolution and low-resolution data files are generated from the same source and stored with unique identification information, such as a Unique Material Identifier (UMID), allowing for efficient searching and maintaining data relationships across different formats like MPEG-4.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If time code information is used to relate recorded data in two kinds of formats, then it is possible to manage those recorded data together, but when those data are sent or stored separately, the relationship between those recorded data cannot be recognized
Solution Approach 1:
The patent embeds the UMID (Unique Material Identifier) directly within the file metadata of each recorded data file, rather than relying on external time code information. This segmentation approach ensures that each file contains its own unique identifier, allowing files to be managed independently while maintaining their relationship through the embedded UMID.
Solution Approach 2:
The UMID acts as an intermediary element that bridges the relationship between high-resolution and low-resolution recorded data files. By embedding this unique identifier in both file types, the system maintains a reliable link between them even when stored or transmitted separately, preventing loss of relationship information.
2Ease of operation
If file name is automatically assigned to relate recorded data in two kinds of formats, then it is possible to maintain data relationship, but the automatically assigned file name is changed by user's input during editing work, making it impossible to relate those recorded data
Solution Approach 1:
The patent extracts the critical identification function from the file name and embeds it separately as a UMID within the file metadata. This allows the file name to be freely modified during editing operations while the embedded UMID remains unchanged, preserving the reliable relationship between high-resolution and low-resolution files.
Solution Approach 2:
The UMID is embedded in the file metadata during the initial recording process, before any editing operations occur. This preliminary embedding ensures that the unique identifier is established and preserved throughout subsequent editing workflows, maintaining data relationships regardless of later file name changes.
3Ease of operation
If non-linear editing system using PC is used for speedy random accessibility, then editing convenience is improved, but for high-bitrate material such as HD television program, it is expensive
Solution Approach 1:
The patent creates low-resolution copies of the recorded material that can be used for editing operations. These copies contain embedded UMIDs that maintain the relationship with the original high-resolution files, allowing editors to work with smaller, more manageable files on standard PC systems while preserving the ability to access the full-quality originals when needed.
Data Source
AI summary
Provided is a digital video recording system which can properly maintain a corresponding relationship between recorded data in two different kinds of formats which are generated from the same inputted video-audio data, even if those data are managed separately. In a case where the first file is generated as a main material file with a high resolution, and the second file is generated as a low-bitrate audio-video (AV) data file (204) with a low resolution, a CLIP-UMID (309) which is identification information unique to the first file is stored in a skip box (304) in the low-bitrate AV data file (204).