Video Playback Scene Navigation via Key Frame Extraction
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Solution Overview
Problem
Current video playback methods, such as skip playback and fast playback, fail to allow users to accurately jump to or locate specific video scene clips, often resulting in missed content or compromised viewing experience.
Innovation Solution
A method and device that extract playback times for specific video clips based on scene similarity and user preferences, allowing users to accurately jump to desired scenes by adjusting playback progress through a video player interface, including features like drag-and-drop controls and scene thumbnails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If skip playback operation is used to manually jump to any frame, then user can navigate to different positions in video, but controllability is poor and user may miss video scene clips of interest
Solution Approach 1:
The patent replaces manual mechanical frame-by-frame skip playback with an automated optical recognition system. The system uses image recognition technology to automatically identify and locate key frames corresponding to scene clips, substituting the mechanical manual navigation process with an intelligent automated system that can accurately identify desired scenes without user intervention.
Solution Approach 2:
The system enables self-service by automatically analyzing video content, identifying key frames, and presenting them to users for selection. The video player autonomously performs scene recognition and clip extraction, allowing users to simply select from pre-identified key frames rather than manually searching through entire videos.
2Productivity
If fast playback operation is used to change video playback speed, then user can watch video faster or slower, but playback speed of video sound changes affecting viewing effect
Solution Approach 1:
The patent segments the video content into distinct scene clips based on key frame identification. Instead of playing back the entire video at accelerated speeds, the system extracts and presents only relevant scene clips at normal playback speed, maintaining audio-visual synchronization and viewing quality while reducing overall watching time by eliminating redundant content.
Solution Approach 2:
The system extracts only the essential scene clips from the full video content based on key frame analysis. By taking out and presenting only the most important segments at normal speed, the system maintains viewing quality and audio-visual consistency while achieving faster content consumption through selective presentation rather than accelerated playback.
3Loss of time
If watching clip versions operation is used to condense video length, then user can quickly watch video, but video scenes are quickly switched not meeting user aesthetics
Solution Approach 1:
The system performs preliminary action by pre-processing the video to identify and extract key frames representing important scene clips before playback. This advance preparation allows the system to present only essential content in a condensed format while maintaining scene quality and aesthetic value, as the most important frames have already been identified through image recognition technology.
Solution Approach 2:
The patent replaces the mechanical process of simply cutting and condensing video segments with an intelligent image recognition system. This system analyzes video content to identify semantically important key frames, substituting blind compression with intelligent selection that preserves viewing experience quality while achieving time savings through selective presentation of essential scenes.
Data Source
AI summary
The invention provides a method and a device for controlling video playback. The method includes: extracting playback time of a video clip taken for a predetermined scene from a video to be played; displaying a predetermined control corresponding to the playback time of the video clip taken for the predetermined scene on a video player playing the video; and controlling the video player to adjust a playback progress of the video to the playback time of the video clip taken for the predetermined scene to be played, when a trigger operation for the predetermined control is detected.