Video Display Viewpoint Switching for Seamless Playback
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Solution Overview
Problem
Existing video distribution systems face challenges in appropriately displaying videos captured from multiple viewpoints, especially when the selected viewpoint is not available, leading to interruptions and inefficient viewer experience due to the vast number of videos and varying camera types.
Innovation Solution
A method and device for selecting and displaying videos by obtaining multiple viewpoints of the same scene, determining if the selected viewpoint is available, and switching to an alternative viewpoint based on evaluation values, ensuring continuous video playback without interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple viewpoints are provided to ensure continuous video playback, then video display reliability is improved, but the complexity of video selection and management increases
Solution Approach 1:
The system pre-obtains a plurality of second videos from multiple cameras before the current video ends. This preliminary preparation ensures that alternative videos are ready for immediate playback when the selected viewpoint becomes unavailable, maintaining display continuity without complex real-time decision-making
Solution Approach 2:
The system creates alternative video streams from different camera viewpoints that replicate the coverage of the current video. These copied video streams from other cameras serve as backups, allowing seamless switching when the original viewpoint is unavailable
2Ease of operation
If automatic viewpoint selection is implemented to improve ease of operation, then viewer control simplicity is improved, but the precision of viewpoint selection may deteriorate
Solution Approach 1:
The system provides feedback to viewers about available camera viewpoints and allows selection among them. The system monitors whether the selected viewpoint is available and automatically switches alternatives only when necessary, maintaining viewer control while ensuring continuous playback
Solution Approach 2:
The system provides more viewpoint options than strictly necessary (a plurality of alternative videos from different cameras), allowing viewers to choose from multiple acceptable options rather than forcing a single automatic selection, thus maintaining both ease of operation and selection accuracy
3Adaptability or versatility
If videos from multiple cameras are managed to provide alternative viewpoints, then adaptability of the system is improved, but the quantity of videos to be managed increases
Solution Approach 1:
Multiple camera videos serve universal purposes: they function as both primary content sources and alternative backups. Each camera video can become the main displayed video or serve as an alternative when another camera's video becomes unavailable, reducing the need for separate dedicated backup videos
Data Source
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AI summary
A video display method includes: a displaying step (S372) of selecting, as a first selected viewpoint, one first viewpoint from among a plurality of first viewpoints corresponding to a plurality of second videos, and displaying a second video corresponding to the first selected viewpoint; a determining step (S374) of determining whether the first selected viewpoint is included in a plurality of second viewpoints corresponding to a plurality of fourth videos captured after the plurality of second videos; and displaying steps (S376, S377) of selecting one second viewpoint from among the plurality of second viewpoints as a second selected viewpoint and displaying a fourth video that is included in the plurality of fourth videos and corresponds to the second selected viewpoint, when the first selected viewpoint is determined to not be included in the plurality of second viewpoints (no in S374).