Thumbnail Navigation for Video Playback Scene Selection
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Solution Overview
Problem
Existing moving picture playback methods complicate the process of positioning and playing back specific scenes during rewinding or fast-forwarding operations, requiring multiple user steps.
Innovation Solution
A method that detects a user's location in a moving picture display area, determines whether it's in a fast-forwarding or rewinding section, generates and displays thumbnails of subsequent or previous frames accordingly, and allows playback of the corresponding frames, simplifying the process of finding and playing back desired scenes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional moving picture playback methods are used, then the system structure remains simple, but the ease of operation deteriorates because users need to perform multiple operation steps to playback scenes in fast-forwarding or rewinding directions
Solution Approach 1:
The display area is divided into multiple regions (current playback position region, future playback position region, past playback position region) to enable differentiated thumbnail generation and display based on user interaction location. This segmentation allows the system to provide context-aware navigation thumbnails without requiring complex additional hardware or software modules.
Solution Approach 2:
Thumbnails are pre-generated and displayed in the appropriate regions before the user actually needs them. When users interact with the display area, the system has already prepared the relevant thumbnails (future frames for fast-forwarding, past frames for rewinding) based on the interaction location, eliminating the need for multiple sequential operation steps.
2Productivity
If traditional thumbnail display methods are used, then the device complexity remains low, but the productivity deteriorates because users cannot efficiently search for and navigate to desired scenes
Solution Approach 1:
Different regions of the display area provide different types of thumbnail information tailored to the user's needs at that location. The current playback position region shows future frames for fast-forwarding, while the past playback position region shows previous frames for rewinding. This local differentiation enables efficient scene search and navigation without requiring complex additional processing.
Solution Approach 2:
Thumbnails serve as an intermediary between the user and the full-resolution moving picture content. By displaying reduced-frame thumbnails in strategic locations, the system enables users to quickly scan and identify desired scenes before initiating full playback, significantly improving navigation efficiency without adding complex search or indexing mechanisms.
3Ease of operation
If detailed scene navigation is enabled, then the ease of operation improves, but the loss of time increases due to the need to generate and display multiple thumbnails
Solution Approach 1:
Instead of generating and displaying all possible thumbnails for the entire video, the system generates and displays only the necessary subset of thumbnails based on the user's interaction location. When users interact with the display area, only thumbnails relevant to that region (future frames for fast-forwarding, past frames for rewinding) are generated and displayed, reducing unnecessary processing time while maintaining ease of navigation.
Data Source
AI summary
A moving picture playback method including detecting a first location in a moving picture display area indicated by a user, detecting a frame at a time point at which the user indicated the first location, determining whether the first location is located in one of two divided areas of the moving picture display area or in the other thereof, generating a first number of thumbnails of frames temporally subsequent to the detected frame when the first location is located in the one of the two divided areas, and generating a second number of thumbnails of frames temporally previous to the detected frame when the first location is located in the other, displaying the generated thumbnails in the moving picture display area, detecting a thumbnail selected from among the displayed thumbnails by the user, and playing back a moving picture at a frame corresponding to the detected thumbnail and subsequent frames.