Multiple-mode video transmission for legacy set-top box GUI overlay
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Solution Overview
Problem
Legacy set-top boxes in cable television systems face challenges in providing advanced graphical user interfaces during full-screen streaming video content due to disparate operating capabilities, limiting their ability to decode and overlay graphical user interface data effectively.
Innovation Solution
A multiple-mode system that determines the appropriate transmission mode based on the client device's decoding capabilities and video encoding format, allowing for transcoding, stitching, blending, and repackaging of video content to ensure seamless display with graphical user interface elements, including transcoding for incompatible formats and overlaying image data when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If legacy set-top boxes are used to provide full-screen streaming video content, then device compatibility is maintained, but graphical user interface capability is limited
Solution Approach 1:
The system dynamically adapts the graphical user interface rendering location based on client device capabilities. For legacy set-top boxes, the GUI is rendered at the server and included in the video stream, while for modern devices with overlay capabilities, the GUI is rendered separately and overlaid by the client device. This dynamic adaptation resolves the contradiction by maintaining device compatibility while enabling advanced GUI capabilities where available.
Solution Approach 2:
The system introduces an intermediary determination step that assesses client device capabilities before selecting the appropriate GUI transmission mode. This intermediary mechanism evaluates whether the client device can perform overlay operations and routes the GUI rendering accordingly, enabling legacy devices to receive fully processed video streams while modern devices can receive separate video and GUI components for local composition.
2Adaptability or versatility
If transcoding is performed for incompatible video formats, then client device compatibility is improved, but processor resource consumption increases
Solution Approach 1:
The system changes the parameter of video format handling by detecting client device decoding capabilities and selectively applying transcoding only when necessary. For clients that support the original video format, the system serves content without transcoding, thereby maintaining client device compatibility while minimizing processor resource consumption. Transcoding is performed only for clients with incompatible format requirements.
3Ease of operation
If graphical user interface elements are overlaid on full-screen video, then user interaction capability is enhanced, but device complexity requirements increase
Solution Approach 1:
The system segments the graphical user interface rendering task from the video playback function. By separating GUI rendering from video decoding and playback, the system enables user interaction enhancement while reducing the complexity burden on individual device components. The GUI and video are processed independently and combined either at the server or client level depending on device capabilities.
Data Source
AI summary
The method of providing audiovisual content to a client device configured to be coupled to a display. The method detects a selection of a graphical element corresponding to a video content item. In response to detecting the selection of the graphical element, a transmission mode is determined. The transmission mode is a function of: (i) one or more decoding capabilities of the client device; (ii) a video encoding format of the video content item; (ii) whether the video content item should be displayed in a full screen or a partial screen format; and (iv) whether the client device is capable of overlaying image data into a video stream. Next, audiovisual data that includes the video content item is prepared for transmission according to the determined transmission mode. Finally, the prepared audiovisual data is transmitted from the server toward the client device, according to the determined transmission mode, for display on the display.