Passive Flag Media File Encoding Quality Assurance
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Solution Overview
Problem
The variability in encoder and decoder quality leads to uncertainties for content owners and viewers regarding the playback quality of media files, and there is a need for ensuring secure and controlled access to media content.
Innovation Solution
Incorporating a passive flag or data field in media files encoded by a high-quality encoder, which is not part of the standard, to ensure playback only on certified devices, along with a certification process for decoders to guarantee a predetermined level of quality and security features like encryption and watermarking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If media files are encoded using a standards-based encoder with high quality, then playback quality is improved, but uncertainty remains about the actual playback quality on different devices
Solution Approach 1:
The patent applies preliminary action by inserting a passive flag into the media file during the encoding process, before distribution. This flag预先 indicates that the file was encoded with a high-quality encoder, allowing certified decoders to identify and properly handle these files, thus ensuring playback quality assurance in advance rather than relying on uncertain decoder variations.
2Manufacturing precision
If a passive flag is inserted into media files to indicate high-quality encoding, then playback quality on certified devices is ensured, but device complexity increases due to the need for certification and flag detection
Solution Approach 1:
The patent applies self-service by making the passive flag publicly readable and self-descriptive in the media file. The flag contains all necessary information for certified decoders to identify high-quality encoded files without requiring complex external verification. The certification authority establishes the standard, but individual decoders independently verify the flag and determine their own certification status, reducing overall system complexity.
3Reliability
If encryption and watermarking are applied to media files, then security is improved, but ease of operation deteriorates due to additional access requirements
Solution Approach 1:
The patent applies merging by integrating the passive flag, encryption keys, and watermark information into a unified media file structure. Rather than treating security features as separate layers that complicate access, the patent combines them so that certified decoders can handle all these features through a single integrated decoding process, maintaining ease of operation while ensuring security.
Data Source
AI summary
Systems and methods of ensuring a predetermined quality of playback of media content are provided. The predetermined quality is determined by an encoder placing a passive flag or data field within a media file having a predetermined quality. The contents of the media file in which the passive flag or data field is located is not encrypted or designated within a particular standard. A decoder plays the media content within the media file upon detection of the passive flag or data field or in accordance with a value within the passive flag or data field and the certification of the device.