Mobile Device Video Wall Synchronization via Segmented Playout
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Solution Overview
Problem
Existing systems for displaying ultra-wide video content using mobile devices lack synchronization and efficient media delivery, making them unsuitable for effective playout of video content across multiple mobile devices.
Innovation Solution
A mobile device video wall system that divides full-frame video content into partial-frame content for each grid location, synchronizing playout across multiple devices using multicast notifications and dynamic grid generation, ensuring synchronized display across a network of mobile devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple mobile devices are used to display ultra-wide video content, then the display area and flexibility are improved, but synchronization and playout coordination become problematic
Solution Approach 1:
The video content is divided into multiple segments, with each mobile device displaying a specific portion (e.g., a quadrant or section) of the overall ultra-wide video. The system divides the video stream into multiple synchronized segments that are distributed to different devices, allowing each device to display a portion while maintaining coordination through the segmented architecture.
Solution Approach 2:
A central server or coordination system acts as an intermediary between the video source and multiple mobile devices. This intermediary distributes synchronized video segments to each device, manages playout timing, and ensures that all devices display their portions simultaneously. The intermediary coordinates the playout events and maintains synchronization across the distributed display system.
2Adaptability or versatility
If video content is distributed to multiple mobile devices, then display flexibility is improved, but media delivery efficiency deteriorates
Solution Approach 1:
The video content is pre-segmented into multiple portions that can be independently delivered to different mobile devices. Each device receives only its assigned segment rather than the complete video stream, reducing bandwidth requirements and improving delivery efficiency. The segmentation allows parallel delivery of multiple video portions simultaneously.
Solution Approach 2:
The video content is pre-processed and divided into segments before distribution to mobile devices. The system prepares the video segments in advance, establishing delivery schedules and routing information beforehand. This preliminary preparation enables efficient simultaneous delivery to multiple devices without real-time processing bottlenecks.
3Adaptability or versatility
If mobile devices are positioned dynamically in the stadium, then adaptability is improved, but maintaining synchronized playout becomes more difficult
Solution Approach 1:
The system dynamically adapts to changing mobile device positions by receiving location information from devices and reassigning video segments accordingly. When devices move to new positions, the coordination system updates the mapping between devices and their display portions, maintaining synchronization through dynamic reconfiguration rather than fixed assignments.
Solution Approach 2:
Mobile devices provide feedback about their current position and status to the central coordination system. The system uses this feedback information to adjust video segment distribution and maintain synchronized playout. Feedback loops ensure that any deviations in device positioning or timing are detected and corrected to preserve synchronization.
Data Source
AI summary
Systems and methods related to a mobile device video wall are disclosed. In some embodiments, a mobile device operates to obtain one or more media files that contain partial-frame video content for a grid location in a video grid for a mobile device video wall. The mobile device further operates to provide playout of partial-frame video content for the grid location such that the playout of the partial-frame video content for the grid location by the mobile device is synchronized to playout of partial-frame video content for other grid locations in the video grid by other mobile devices in the mobile device video wall.