Checksum Verification for AV Content Format Conversion Integrity
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Solution Overview
Problem
The challenge in the audiovisual (AV) content industry is ensuring the integrity and quality of file format conversions, as different playback systems support varying file formats, and existing methods lack efficient verification mechanisms to confirm successful conversions without errors.
Innovation Solution
The proposed solution involves using checksums to verify content format conversions by generating and comparing checksums between the original and converted content files, ensuring data integrity and accuracy during format changes, such as from MPEG-TS to MP4 or vice versa, with or without re-encryption, and across different encryption methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If file format conversion is performed to enable secondary use of distributed AV content, then adaptability to different playback systems is improved, but verification of conversion integrity becomes more difficult
Solution Approach 1:
The patent applies preliminary action by generating checksums for the original content file before conversion and for the converted content file after conversion. These checksums are prepared in advance to enable subsequent verification of conversion integrity, making the verification process straightforward rather than difficult.
2Measurement precision
If checksum verification is implemented to ensure conversion integrity, then measurement precision of conversion accuracy is improved, but device complexity increases
Solution Approach 1:
The patent uses checksums as simplified copies or representations of the actual content files. Instead of comparing entire converted files to detect errors, the system uses these condensed checksum values, which maintain the essential verification function while dramatically reducing system complexity.
3Adaptability or versatility
If content files are converted between different formats (e.g., MPEG-TS to MP4), then adaptability to various playback systems is improved, but risk of data corruption during conversion increases
Solution Approach 1:
The patent implements feedback by comparing checksums of the original and converted content files. This feedback mechanism detects whether conversion errors or data corruption have occurred, allowing the system to verify reliability after format conversion and identify when re-conversion may be needed.
Data Source
AI summary
Content conversion verification, includes: converting, at a first computer system, an original content file to a target format, generating a converted content file in the target format; generating a checksum for the converted content file; and sending the original content file and the checksum to a second computer system. Key words include content verification and checksum.