Video Stream Trust Checks Using Hashes and Unique Identifiers
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Solution Overview
Problem
Existing video data stream trustworthiness checks lack adaptability to various application scenarios and are inefficient in terms of bitrate and compatibility with video data stream structures.
Innovation Solution
Incorporating a unique identifier into the trustworthiness check by hashing a portion of the video data stream and verifying it against a digital signature, while maintaining adaptability through syntax elements and external resource verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If digital signatures are used for trustworthiness checks of video data streams, then authentication reliability is improved, but bitrate overhead increases
Solution Approach 1:
The patent extracts only the essential verification elements (hash values and unique identifiers) from the complete digital signature verification process, transmitting these compact representations instead of full signature data. This reduces bitrate overhead while maintaining authentication reliability through selective extraction of critical trust verification components.
Solution Approach 2:
The patent changes the parameter representation by using hash functions to transform video content into fixed-length hash values, and by encoding unique identifiers in compact formats. This parameter transformation maintains the cryptographic security and reliability of trustworthiness checks while significantly reducing the data volume transmitted in the video stream.
2Adaptability or versatility
If trustworthiness check methods are standardized, then compatibility with video data stream structures is improved, but adaptability to different application scenarios deteriorates
Solution Approach 1:
The patent designs a universal trustworthiness check framework that can function across multiple application scenarios (streaming, storage, transmission) by defining core verification mechanisms that work with various video data stream structures. The system maintains adaptability through configurable parameters while preserving compatibility through standardized hash and identifier formats that work across different contexts.
Solution Approach 2:
The patent introduces dynamic adaptability by allowing the trustworthiness check parameters (such as hash function selection, identifier formats, and verification thresholds) to be adjusted based on specific application scenarios. This dynamic configuration enables the same core mechanism to adapt to different video stream structures and use cases without requiring complete restandardization for each scenario.
3Measurement precision
If complete video data streams are verified for trustworthiness, then authentication accuracy is improved, but processing time increases
Solution Approach 1:
The patent extracts specific portions of the video data stream (key frames, metadata, or representative segments) for hash computation and verification instead of processing the entire video stream. This extraction approach maintains authentication accuracy by focusing on critical verification points while dramatically reducing the time required to compute and verify hash values across the complete video content.
Data Source
AI summary
Aspects of a trustworthiness check of a video data stream are described. According to a first aspect, a unique identifier which identifies a media asset to which a portion of a video data stream to be checked on trustworthiness belongs, is included into the trustworthiness check. According to a second aspect, a certificate of a content provider for performing the trustworthiness check is retrieved from a track of editors stored at an external resource. A third aspect provides a method for identifying a portion of a video data stream to be checked on trustworthiness using a digital signature. According to a fourth aspect, a digital signature for checking a portion of a video data stream is retrieved from an external resource.