Bi-directional Synchronization for Scene-Based Video Trick Playback
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Solution Overview
Problem
Conventional scene-based trick mode for video playback can confuse users accustomed to time-based trick mode and lacks an effective mechanism for improving trick mode creation, limiting efficient navigation through video content.
Innovation Solution
A bi-directional synchronization method between a first device for video playback and a second device displaying a visual media, such as a storybook, where the presentation status on the second device controls and reflects the playback status on the first device, enabling scene-based trick playback without transmitting full video content, thus saving bandwidth and enhancing user interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If scene-based trick mode is implemented, then navigation through video content is improved, but user confusion increases for those accustomed to time-based trick mode
Solution Approach 1:
The video content is segmented into discrete scenes with metadata tags, allowing the system to navigate through specific scenes rather than continuous time intervals. This segmentation enables precise scene-based control while maintaining the ability to provide time-based navigation options for user familiarity.
Solution Approach 2:
The playback control system is designed to support multiple trick modes (both scene-based and time-based) within a single interface. This multi-functionality allows the system to adapt to different user preferences and backgrounds, providing scene-based navigation for efficiency while maintaining time-based controls for user familiarity.
2Reliability
If full video content is transmitted for trick playback, then playback quality is maintained, but bandwidth consumption increases
Solution Approach 1:
The system extracts and transmits only the essential metadata and scene information required for trick playback rather than transmitting the full video content. This extraction approach maintains sufficient playback quality for navigation purposes while dramatically reducing bandwidth consumption.
Solution Approach 2:
Instead of transmitting actual video content for trick playback modes, the system creates and transmits simplified copies in the form of scene metadata, thumbnails, and scene descriptors. These copies provide sufficient visual information for navigation while consuming minimal bandwidth compared to full video transmission.
Data Source
AI summary
A portable device controlling playback of video data on a first device external to the portable device and including a browser module operative to present a display of a plurality of images, each image corresponding to a section of the video data, and to highlight an image corresponding to the section of the video data currently played back by the first device, a communication module coupled to the browser module and operative, in response to a selection of an image among the plurality of images by a user, to transmit a first command to the first device to play back the video data corresponding to the image selected by the user, wherein the browser module is further operative to adapt highlighting of the plurality of images in response to a second command received from said first device upon a change of the section of video data currently played back on the first device.