Video Fingerprinting via Scene Duration for Ambilight Sync
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Solution Overview
Problem
Existing methods for synchronizing ambilight scripts with video content are computationally intensive and require access to a database for fingerprint matching, making them impractical for consumer electronics, and are vulnerable to changes in video formats and frame rates.
Innovation Solution
A fingerprint for video streams is generated based on scene durations, allowing for efficient synchronization of ambilight scripts with video content without the need for extensive database access, using scene change detection and frame rate considerations to ensure robustness across different formats and frame rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional fingerprint matching methods are used to synchronize ambilight scripts with video content, then synchronization accuracy is improved, but computational complexity increases and database access is required
Solution Approach 1:
The patent extracts only the essential synchronization information (scene change timestamps) from the video content to create a lightweight fingerprint. Instead of using complex traditional fingerprinting methods that require database access, the invention extracts simple temporal markers that can be directly compared with ambilight script timestamps, thereby reducing computational complexity while maintaining synchronization accuracy.
Solution Approach 2:
The patent creates a simplified copy of the video's temporal structure by recording only scene change timestamps rather than using full fingerprint data. This copied temporal information serves as a lightweight alternative to traditional fingerprints, enabling synchronization without requiring access to complex databases or performing intensive computations.
2Measurement precision
If frame-accurate scene change detection is implemented, then synchronization precision is improved, but computational resources increase
Solution Approach 1:
The patent applies partial action by performing scene change detection only at critical moments (scene transitions) rather than continuously analyzing every frame. This approach achieves frame-accurate synchronization precision where needed while avoiding the computational overhead of processing all frames, thereby reducing overall computational resource consumption.
3Adaptability or versatility
If ambilight scripts are provided as separate multimedia files, then flexibility and updateability are improved, but synchronization difficulty increases when video material lacks synchronization markers
Solution Approach 1:
The patent applies preliminary action by embedding scene change timestamps directly into the video file during encoding. This pre-prepared synchronization information is automatically extracted and used to sync with ambilight scripts, eliminating the need for complex manual synchronization processes when videos lack markers. The preliminary embedding of temporal information simplifies the synchronization process while maintaining script distribution flexibility.
Data Source
AI summary
There is provided a fingerprint (340) for a video stream (110) comprising a sequence of scenes (200a, 200b, 200c), wherein the fingerprint (340) includes information indicative of durations of the scenes (200a, 200b, 200c). The information indicative of the durations of the scenes (200a, 200b, 200c) is included in the fingerprint (340) in an order in which the scenes (200a, 200b, 200c) are included in the video stream (110). Moreover, each duration is optionally defined as a count of a number of video frames (260, 270) therein. The method is capable of generating a fingerprint which is susceptible to more simply and more efficiently synchronizing first and second data signals together.