Dual-Stream Video Shooting for Protagonist Tracking and Context Capture
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Solution Overview
Problem
Existing video shooting technologies focus solely on a selected protagonist, resulting in incomplete capture of the environment around the protagonist, making it difficult for users to obtain environmental (state and action) information such as the protagonist's surroundings during recording.
Innovation Solution
A shooting method that simultaneously generates an original video and a close-up video, allowing users to select a protagonist and track it while recording, ensuring the protagonist remains the focus in the close-up video while capturing the broader environment in the original video.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal device focuses solely on tracking the selected protagonist, then the protagonist remains always at the center of the video, but the environment around the protagonist is incompletely captured
Solution Approach 1:
The video recording function is segmented into two parallel modes: automatic tracking mode that focuses on the protagonist, and manual panning mode that captures the environment. This segmentation allows each mode to optimize for its specific purpose without compromising the other, resolving the contradiction between protagonist tracking accuracy and environmental information capture
2Ease of operation
If the terminal device records only the protagonist in automatic tracking mode, then the protagonist is always centered, but users cannot obtain environmental state and action information
Solution Approach 1:
The video recording function is designed with multi-functionality, supporting both automatic tracking and manual panning modes within the same interface. Users can switch between these modes based on their needs, allowing the system to serve multiple purposes (protagonist focus and environmental capture) without requiring separate applications or complex configurations
3Device complexity
If the terminal device uses a single camera for video recording, then the device structure is simple, but it cannot simultaneously capture both close-up protagonist details and wide-angle environment
Solution Approach 1:
The system dynamically adjusts the camera's field of view and recording parameters based on the selected mode. In automatic tracking mode, the camera maintains a fixed framing on the protagonist, while in manual panning mode, the camera allows free movement to capture environmental context. This dynamic adaptability enables a single camera system to effectively handle diverse shooting scenarios
Data Source
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AI summary
This application provides a shooting method. By implementing the method, a terminal device such as a mobile phone or a tablet computer can determine a shot protagonist based on a user operation when starting shooting or in a shooting process. In the shooting process, the terminal device may display, in a preview window, an image stream collected by a camera, and the terminal device may further generate a small window that specially displays the protagonist. After recording ends, a user may obtain two videos: an original video generated based on the image stream in the preview window, and a close-up video generated based on a protagonist image stream in the small window. In this way, the user can choose to use the original video and/or the close-up video to meet personalized requirements in different scenarios at different moments of the user.