Variable Speed Playback Control for Wearable Video Clarity
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Solution Overview
Problem
Wearable devices, such as smart glasses, face challenges in enhancing user viewing experiences due to variable motion speeds and frequencies of subjects, leading to unclear or time-consuming video playback.
Innovation Solution
A method and device that determine whether a video file satisfies predefined conditions for variable speed playback based on motion intensity and scene analysis, adjusting playback speed accordingly to optimize the viewing experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If video playback is performed at normal speed, then playback efficiency is high, but fast-moving subjects become unclear and slow-moving subjects take too much time to view
Solution Approach 1:
The patent applies dynamics by making the playback speed variable rather than fixed. The system dynamically adjusts playback speed based on the motion characteristics of subjects in the video, transitioning between different speed states to optimize both viewing clarity and efficiency for different content segments.
Solution Approach 2:
The patent changes the playback speed parameter based on analyzed motion characteristics. By detecting motion intensity and duration of subjects, the system modifies the playback speed parameter to match the content requirements, achieving clear viewing of fast-moving subjects and efficient browsing of slow-moving subjects.
2Measurement precision
If video playback is performed at slow speed, then viewing clarity of fast-moving subjects improves, but playback time increases and efficiency decreases
Solution Approach 1:
The patent applies local quality by applying different playback speeds to different segments of the video based on local motion characteristics. Instead of playing the entire video at a uniform speed, the system analyzes motion intensity and duration locally and adjusts playback speed accordingly, ensuring slow playback only where needed for clarity.
Solution Approach 2:
The system dynamically adjusts playback speed based on real-time analysis of motion characteristics, transitioning between normal and slow playback speeds as needed. This dynamic adjustment ensures slow playback is applied only to segments requiring enhanced clarity, minimizing overall playback time loss.
3Productivity
If video playback is performed at fast speed, then playback efficiency improves, but slow-moving subjects cannot be viewed clearly and take too much time
Solution Approach 1:
The patent changes the playback speed parameter based on motion characteristics analysis. By detecting motion intensity and duration, the system adjusts the playback speed parameter to match content requirements, achieving efficient playback for slow-moving subjects while maintaining clarity when needed.
4Ease of operation
If variable speed playback is implemented, then viewing experience is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the system to automatically analyze motion characteristics and adjust playback speed without user intervention. The device performs self-analysis of video content and self-adjustment of playback parameters, simplifying the user interface while maintaining sophisticated functionality.
Solution Approach 2:
The system implements feedback by continuously analyzing motion characteristics and using this information to adjust playback speed. The analysis results feed back into the playback control mechanism, creating a closed-loop system that automatically optimizes viewing experience based on content characteristics.
Data Source
AI summary
A method for controlling playback, includes: obtaining a video file; determining whether a subject in the video file satisfies a predefined condition of variable speed playback; and in response to determining that the subject satisfies the predefined condition of variable speed playback, playing back the video file at a variable speed.