Dual-Stream Video Transmission via Low-Quality Proxy Analysis
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Solution Overview
Problem
Mobile video recording systems face storage and transmission challenges due to the large size of high-resolution and high-frame-rate videos, which consume significant space and time for wireless transmission.
Innovation Solution
A method where a mobile device records and stores both low-quality and high-quality video streams, transmitting only the low-quality video to a base station for analysis, allowing for deletion or overwrite of both videos based on the analysis, thereby conserving storage and reducing transmission time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high resolution video is recorded and stored, then video quality is improved, but storage space is consumed excessively
Solution Approach 1:
The video data is segmented into two quality versions: low resolution and high resolution. The mobile device records both versions simultaneously, allowing the system to transmit only the smaller low resolution version while preserving the high resolution version locally for potential later use, thus resolving the contradiction between video quality and storage space consumption
Solution Approach 2:
A low resolution copy of the video is created and transmitted instead of the original high resolution video. This copy serves as a proxy that consumes minimal bandwidth and storage while the high resolution original remains stored locally, allowing quality preservation without excessive storage consumption
2Measurement precision
If high resolution video is transmitted wirelessly, then video quality is improved, but transmission time is increased
Solution Approach 1:
A low resolution copy of the video is transmitted wirelessly instead of the high resolution version. This copy maintains sufficient quality for initial analysis and review while dramatically reducing transmission time and bandwidth consumption. The high resolution version remains stored locally and can be transmitted later if needed
Solution Approach 2:
The low resolution video is transmitted first as a preliminary action before the high resolution video. This allows for preliminary analysis, review, and determination of whether the high resolution version is actually needed, thereby avoiding unnecessary transmission of large high resolution files and reducing overall transmission time
3Loss of time
If low resolution video is transmitted instead of high resolution video, then transmission time is reduced, but video quality is degraded
Solution Approach 1:
A low resolution copy is transmitted for initial purposes while the high resolution original is preserved locally. The copy serves as a sufficient substitute for many purposes (review, analysis, preliminary evaluation) without requiring transmission of the full high resolution file, thus reducing transmission time while maintaining adequate video quality for those purposes
Solution Approach 2:
The system dynamically adapts video quality based on needs: low resolution is used for transmission and initial review, while high resolution is retained for situations requiring superior quality. This dynamic approach optimizes the balance between transmission time and video quality based on actual requirements
Data Source
AI summary
A method for controlling video in a system includes receiving wirelessly at a stationary base station a low quality video from a mobile device, the mobile device configured to record both the low quality video and a high quality video of a same video stream, to store each of the low quality video and the high quality video, and to wirelessly transmit only the low quality video. The method includes analyzing the low quality video at the stationary base station and, based on the analysis, transmitting a signal to the mobile device to delete the low quality video and the high quality video from the mobile device, to allow overwrite of the low quality video and the high quality video from the mobile device, or to request transmission of the high quality video from the mobile device.