Video Playback Speed Control for Scene Prioritization
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Solution Overview
Problem
Conventional video data retrieval and browsing techniques are inefficient, requiring excessive time and effort to find specific scenes, as they rely on metadata and fixed reproduction speeds, often missing important scenes and providing a jumpy or incomplete view of video content.
Innovation Solution
A video data display apparatus that calculates user operation speed to adjust reproduction speed, allowing selected sections to be viewed at a slower pace than non-selected sections, ensuring important scenes are not overlooked and providing a seamless browsing experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If video data is browsed using fixed reproduction speed, then browsing efficiency is improved, but important scenes may be overlooked
Solution Approach 1:
The reproduction speed is made dynamic rather than fixed. The system automatically adjusts reproduction speed based on the importance of video sections, slowing down for important scenes and speeding up for less important ones, thereby preventing important scenes from being overlooked while maintaining browsing efficiency
Solution Approach 2:
The reproduction speed parameter is changed based on section importance. By varying this parameter dynamically according to the characteristics of different video sections, the system optimizes both browsing efficiency and scene detection accuracy
2Speed
If video frames are extracted at fixed intervals, then browsing speed is improved, but reproduction becomes jumpy and content comprehension is hindered
Solution Approach 1:
The frame extraction interval is made dynamic based on section importance. For important sections, frames are extracted more frequently to ensure smooth reproduction and content comprehension, while for less important sections, extraction occurs at lower intervals to maintain browsing speed
3Ease of manufacture
If metadata annotation techniques are used, then video data organization is improved, but retrieval accuracy remains insufficient
Solution Approach 1:
The system performs preliminary analysis of video content to identify important scenes before the retrieval process. By pre-marking important sections and preparing their reproduction parameters in advance, the system ensures both good organization and high retrieval accuracy when users search for specific content
Data Source
AI summary
A video data display apparatus for reproducing and displaying video data calculates an operation speed based on an input user operation, determines a reproduction speed according to the calculated operation speed, and reproduces video data at the determined reproduction speed. Here, the video data display apparatus acquires section information indicating a section selected from the video data, and, in a case where the calculated operation speed exceeds a prescribed operation speed, determines the reproduction speed for performing reproduction, such that a reproduction speed of video data belonging to the selected section indicated by the section information is slower than a reproduction speed of video data not belonging to the selected section.