Embedding Content-Based Index Streams in Multimedia Files
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Solution Overview
Problem
Current multimedia content indexing technologies face challenges due to high acoustic and visual complexity, leading to poor index quality and high computing requirements, which limits the effectiveness of content-based indexing and retrieval, especially when dealing with multimedia files containing background music or sound effects, and results in significant information loss during compression.
Innovation Solution
Performing content-based analysis before encoding multimedia content and embedding a content-based index stream into the multimedia file during rendering, allowing for searchable indexing that can be used to generate a searchable index or edited prior to incorporation, thus improving index quality and reducing processing power demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If content-based indexing is performed on encoded multimedia files, then indexing can be done after compression, but a large amount of useful information is lost before indexing analysis, reducing index quality
Solution Approach 1:
The patent performs content-based analysis before encoding the multimedia content, during the rendering stage. This preliminary action allows indexing to be done on the original, uncompressed content, preserving all useful information before compression occurs, thereby maintaining high index quality while avoiding information loss
2Adaptability or versatility
If speech recognition is performed on audio files with background music or sound effects, then indexing can be done on complex multimedia content, but speech recognition error rates increase significantly, reducing index quality
Solution Approach 1:
The patent segments the multimedia content into separate source tracks (audio, video, text) before analysis. By analyzing each track independently before rendering and mixing, the system can perform speech recognition on clean audio tracks without background music or sound effects, maintaining high accuracy while still achieving the ability to index complex multimedia content
3Ease of operation
If content-based indexing is performed on all multimedia content, then comprehensive search capability is achieved, but processing power requirements increase by an order of magnitude compared to text-based indexing
Solution Approach 1:
The patent performs content-based analysis during the rendering stage, which is a preliminary action that occurs once when the multimedia file is created. This allows the indexing to be done in advance, and the resulting index can be stored with the file, eliminating the need for repeated high-power processing when searching or playing back the content
4Ease of manufacture
If content-based analysis is performed after encoding, then processing can be done on compressed files, but the quality of the file is lowered, making it difficult to perform content-based analysis for indexing
Solution Approach 1:
The patent performs content-based analysis during the rendering stage, before encoding/compression is applied. This preliminary action ensures that the analysis is done on high-quality, uncompressed source content, maximizing content analysis quality while avoiding the problems associated with analyzing compressed files
Data Source
AI summary
Content-based analysis is performed on multimedia content prior to encoding the multimedia content in the rendering chain of processing. A content-based index stream is generated based on the content-based analysis and the content-based index stream is embedded in the multimedia file during rendering. The content-based index stream can be used to generate a content-based searchable index when necessary.