MPEG-2TS to MP4 Format Conversion with Start Code Extraction
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Solution Overview
Problem
There is a lack of secure and accurate methods for format conversion from MPEG-2TS to MP4 format, particularly in the context of Blu-ray disc data, which can result in content reproduction failures when copied to portable terminals.
Innovation Solution
An information processing device with a data converting unit that sorts out TS packets from MPEG-2TS format data, selects a TS packet with a start code at the payload's top based on header information, and extracts payload configuration data to set it as MP4 format data, using transport priority values to determine the start code position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If format conversion from MPEG-2TS to MP4 is performed without secure processing, then conversion speed is improved, but content reproduction reliability deteriorates
Solution Approach 1:
The patent applies preliminary action by identifying and marking the position of start codes within TS packets before the actual format conversion process. The data converting unit executes processing to select TS packets having a start code at a top of a payload based on header information, and extracts payload configuration data other than the start code. This pre-processing step ensures that the conversion process can proceed efficiently while maintaining accuracy, as the critical start code positions are already identified and handled separately.
2Device complexity
If format conversion processing is performed without accurate start code identification, then processing complexity is reduced, but manufacturing precision deteriorates
Solution Approach 1:
The patent applies the extraction principle by separating the start code from the payload configuration data. The data converting unit extracts payload configuration data other than the start code (SC) and sets the extracted data as configuration data of MP4 format data. This extraction approach allows the system to handle start codes as a distinct element, ensuring accurate format conversion without unnecessarily complicating the overall processing framework.
3Loss of time
If all TS packets are processed without selective identification, then processing time is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent applies local quality by treating TS packets differently based on their specific characteristics. The data converting unit selects TS packets having a start code at a top of a payload on the basis of header information of the TS packets sorted out. This selective processing approach ensures that packets containing start codes are handled with appropriate precision while other packets can be processed more efficiently, optimizing both time and accuracy.
Data Source
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AI summary
It is possible to accurately and securely execute conversion from an MPEG-2TS format to an MP4 format. A data converting unit that executes format conversion from an MPEG-2TS format to an MP4 format sorts out TS packets storing video data from MPEG-2TS format data, selects a TS packet having a start code (SC) at the top of a payload on the basis of header information of the sorted out TS packets, and extracts payload configuration data other than the start code (SC) and sets the payload configuration data as configuration data of MP4 format data. The data converting unit determines, on the basis of, for example, a value of a transport priority set in a header of the TS packet, whether or not the TS packet is a TS packet in which a start code (SC) is set in a top region of a payload.