DVR Video Storage Management via Quality Adjustment
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Solution Overview
Problem
Digital Video Recorders (DVRs) with limited storage capacity face challenges in storing high-quality videos for extended periods without deleting important data, as existing systems require trade-offs between storage duration and video quality, and uploading to cloud storage is costly and impractical for remote devices.
Innovation Solution
A method and system that generate metadata for videos, determining the need for size reduction based on storage duration, using machine learning to adjust quality parameters or eliminate uneventful segments, allowing for longer storage while maintaining video quality, and enabling remote retrieval of important video segments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If video quality parameters are maintained at high levels, then video quality is improved, but storage duration is reduced due to limited storage capacity
Solution Approach 1:
The system dynamically adjusts video quality parameters based on storage availability and video importance. Quality parameters such as resolution, bitrate, and frame rate are modified in real-time to optimize the balance between video quality and storage duration, allowing the system to adapt to changing storage conditions while preserving important footage
Solution Approach 2:
The system applies different quality levels to different video segments based on their importance. Critical events and important footage are stored at high quality, while uneventful or less important segments are stored at lower quality or compressed more aggressively, optimizing overall storage efficiency while preserving essential information
2Duration of action of stationary object
If storage capacity is increased to store more videos, then storage duration is improved, but device cost and complexity increase
Solution Approach 1:
The system changes storage parameters such as compression ratios, quality settings, and retention periods to maximize the use of available storage capacity. By adjusting these parameters dynamically, the system extends storage duration without requiring additional physical storage hardware, thereby avoiding increased device complexity and cost
3Duration of action of stationary object
If cloud storage is used to store videos remotely, then storage duration is improved, but operational cost increases significantly
Solution Approach 1:
The system extracts and removes only the essential metadata and critical video segments from local storage, keeping the bulk of video data stored locally. This selective extraction reduces the need for expensive cloud storage while maintaining the ability to access important footage, thereby reducing operational costs
4Loss of information
If all video data is retained without deletion, then video quality is preserved, but storage capacity is exhausted and new recordings cannot be stored
Solution Approach 1:
The system performs preliminary actions by pre-processing video data during recording, including compression, segmentation, and tagging with metadata. This preliminary processing enables efficient storage and later retrieval of important segments without needing to retain all raw video data, preserving essential information while managing storage capacity
Data Source
AI summary
Systems and methods for storing videos in a storage device, more specifically in a digital video recorder (DVR). The method includes determining, for each video, a condition indicating a need to reduce the size of a respective video is determined. The condition being at least a storage period of the respective video being greater than a threshold time period. Upon determination reducing the video size either by reducing at least one quality parameter of the respective video or by eliminating at least one video segment of the video corresponding to an uneventful region. Further after the size reduction, storing the respective video as a modified version of the respective video in the storage device. Further, the video or a portion of video comprising important events can be shared with a remote device.