Playback Positioning Using Tagged Frames for Scene Boundary Alignment
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Solution Overview
Problem
Current digital video recorders (DVRs) lack a mechanism to determine optimal start or end points for scenes during fast-forward or rewind, often starting playback at arbitrary points within a video content, failing to align with the user's intended viewing position.
Innovation Solution
A method and device that tag significant points in video content, allowing for prioritized playback positioning by using these tags to determine the appropriate start or stop points when navigating through content, using a controller to analyze navigation instructions and seek to tagged frames for precise playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the DVR simply begins playing where the user presses the Play button, then the playback starts immediately at the user's current position, but the playback does not necessarily start on a scene boundary
Solution Approach 1:
The system performs preliminary tagging of scene boundaries and significant points in the video content before playback. These tags are stored in association with the content, enabling the DVR to quickly identify and jump to appropriate scene boundaries when the user presses Play, rather than starting at an arbitrary position. This preliminary preparation resolves the contradiction by pre-establishing the scene structure information needed for precise positioning.
Solution Approach 2:
The patent introduces tags as an intermediary element between the user's Play button press and the actual playback start position. These tags act as markers that mediate the positioning process, allowing the system to interpret the user's intent and automatically adjust the start position to the nearest appropriate scene boundary or significant point, thus resolving the mismatch between user position and scene boundary alignment.
2Productivity
If the DVR uses a fixed delay mechanism to compensate for fast-forward or rewind, then the playback start point is determined by navigation speed, but the delay amount is arbitrary and does not guarantee scene boundary alignment
Solution Approach 1:
The system pre-tags scene boundaries and significant points in the video content, creating a reference framework before navigation occurs. When the user performs fast-forward or rewind, the system uses these pre-established tags to accurately determine the nearest appropriate start position, rather than relying on arbitrary fixed delays. This preliminary tagging enables precise position calculation based on actual scene structure.
Solution Approach 2:
The system incorporates feedback mechanisms that monitor navigation speed and duration, then use this information in conjunction with the pre-tagged scene boundaries to calculate the optimal playback start position. The feedback loop allows the system to adjust the start position dynamically based on actual navigation behavior, ensuring accurate scene boundary alignment while maintaining navigation efficiency.
3Loss of time
If the DVR skips back a certain amount to compensate for fast-forward or rewind, then the playback attempts to account for navigation delay, but the skip amount is fixed and does not ensure starting at an appropriate scene or significant point
Solution Approach 1:
The system pre-establishes tags marking scene boundaries and significant points throughout the video content. When navigation occurs, these pre-tagged positions serve as reference points for calculating the optimal start position, replacing the need for fixed skip amounts. The preliminary tagging structure enables the system to accurately compensate for navigation delay by identifying the nearest appropriate scene or significant point based on actual content structure rather than arbitrary time offsets.
Data Source
AI summary
A method and device for optimal playback positioning in video content are provided. The present disclosure relates to a mechanism of tagging scenes or significant points in content in a prioritized way, and defines a mechanism to utilize this tagging associated with the content to facilitate stopping or starting at appropriate points for playback, e.g., when pressing a scene skip button to jump forward or back to another scene, or when pressing Play after inputting a fast-forward or rewind instruction. The method and device provide for displaying video content at a playback speed for viewing, receiving a first navigation instruction to navigate the video content at a speed faster than the playback speed for viewing, receiving a second navigation instruction to displaying of the video content, and determining a playback position of the video content based on at least one tagged frame of the video content.