Camera Tracking Data Encoded in Audio for Video Synchronization
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Solution Overview
Problem
Existing synchronization methods for camera tracking data and video data in post-production workflows face inefficiencies and errors due to storage and alignment challenges, necessitating complex file organization and timecode synchronization.
Innovation Solution
A tracking system that embeds tracking data, including camera position and orientation, in an audio signal synchronized with video data, using a converter to encode this data for seamless integration and real-time rendering with virtual graphics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If timecode data is embedded in both video files and tracking data files, then synchronization between tracking data and video data can be achieved, but storage overhead increases and alignment challenges arise leading to inefficiencies and errors
Solution Approach 1:
The patent combines tracking data and video data into a single unified file structure, eliminating the need for separate tracking data files and their associated timecode data. This merging approach reduces storage overhead while maintaining synchronization accuracy, as the tracking data is inherently linked to its corresponding video frames within the same file.
Solution Approach 2:
The patent extracts the timecode synchronization mechanism from the traditional dual-file approach and integrates it directly into the video file structure itself. By embedding tracking data within the video file's data stream rather than requiring separate external files, the system eliminates redundant timecode embedding and reduces overall storage requirements.
2Reliability
If conventional file-based synchronization methods are used, then tracking data can be recorded and stored, but complex file organization and alignment procedures are required leading to workflow inefficiencies
Solution Approach 1:
The patent merges tracking data recording and video data recording into a single integrated process. The tracking device records position information directly关联 with video frames captured by the camera, creating a unified data structure that eliminates complex file organization requirements. This single-file approach simplifies post-production workflows by removing the need for separate file management and alignment procedures.
3Reliability
If genlock is used to ensure equal time separation between camera frames and tracking data packages, then synchronization can be maintained, but the system complexity increases and adaptability to different recording modes is reduced
Solution Approach 1:
The patent implements a dynamic recording system that can adapt to different recording modes (continuous recording, stop-and-start recording, live broadcast) without requiring genlock. The system dynamically adjusts to the camera's actual recording behavior by embedding tracking data directly with each captured frame, allowing flexible recording patterns while maintaining synchronization accuracy through the unified file structure.
Data Source
Figure 1~2
AI summary
The present invention pertains to a tracking system for synchronized transmission of tracking data, comprising: tracking device 1 configured to determine the position of the tracking device 1, and/or the position of a camera 5 to which the tracking system is attachable, and to generate tracking data, which contains information on the determined position; and a converter 2 configured to encode the tracking data in an audio signal. The invention is further directed to a converter for converting and/or encoding tracking data generated by a tracking device to/in an audio signal, a camera system for capturing synchronized tracking data and video data, and a method for synchronizing tracking data with video data.