MMT to BDAV Format Conversion for Video Playlist Generation
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Solution Overview
Problem
Current technologies lack the capability to generate and record playlist files or clip information files in the BDAV format from data delivered in the MMT format, necessary for reproducing MMT format data using BDAV format applications.
Innovation Solution
An information processing apparatus and method that extracts data from MMT format input to generate and record database files in the BDAV format, specifically creating playlist and clip information files to enable the reproduction of MMT format data using BDAV format applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MMT format data is recorded directly in a medium, then the data can be stored, but it cannot be reproduced by BDAV format applications because reproduction control information (database files) is missing
Solution Approach 1:
The patent introduces an intermediary conversion process that transforms MMT format data into BDAV format data, including generating necessary database files (playlist files and clip information files) as intermediaries. This mediator enables compatibility between the two formats, allowing BDAV applications to reproduce MMT recorded data through the generated control information files.
2Adaptability or versatility
If data is converted from MMT format to MPEG-2TS format for recording, then compatibility with existing systems is improved, but the quality and efficiency for next-generation content (4K, HDR) is reduced
Solution Approach 1:
The patent makes the recording system universal by enabling it to handle both MMT format (for next-generation content) and BDAV format (for compatibility) simultaneously. The system can record MMT format data directly while generating BDAV-compatible database files, making the same system adaptable to both current and future content requirements without format conversion loss.
3Adaptability or versatility
If reproduction control information files are generated for every MMT format recording, then BDAV application compatibility is achieved, but the processing complexity and time increase
Solution Approach 1:
The patent performs preliminary actions by generating the necessary BDAV format database files (playlist files and clip information files) at the time of recording MMT format data. This preliminary generation of control information eliminates the need for complex real-time conversion during reproduction, reducing playback complexity while maintaining compatibility.
4Productivity
If MMT format data is recorded without generating database files, then recording speed is maintained, but the data cannot be reproduced by BDAV format applications
Solution Approach 1:
The patent merges the recording of MMT format data with the generation of BDAV format database files into a single integrated process. By combining these operations, the system maintains high recording productivity while simultaneously ensuring reproducibility by BDAV applications, avoiding the need for separate processing steps.
Data Source
AI summary
To enable MMT format data to be recorded as BDAV format data in a medium, and a list of video-recorded contents to be displayed and reproduced by an application for BDAV. Data to be recorded in a playlist or clip information file defined in a BDAV format is extracted from MMT format data input on a broadcast wave or the like thereby to generate a data file thereof. For example, data applied to display a list of video-recorded contents is extracted from MMT-SI or TLV-SI in the MMT format data and recorded in the playlist or clip information file.