Video Coding for Multi-Format Playback on External Devices
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Solution Overview
Problem
Existing video-coding systems face challenges in achieving high-quality video file reproduction and display on external apparatuses, particularly in mobile devices, due to limitations in resolution and format conversion capabilities, leading to deteriorated display quality and increased costs for real-time processing.
Innovation Solution
A video-coding apparatus with a coding block and apparatus registration block that generates coded video files in multiple formats based on registered apparatus information, allowing for immediate and high-quality video file reproduction and display on connected devices, even those with limited format conversion capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the external apparatus conducts resolution conversion and format conversion processes to adapt to different display specifications, then the system can support various external devices, but reproduction and display quality deteriorates due to simplified conversion processes
Solution Approach 1:
The video coding apparatus performs resolution conversion and format conversion processes in advance before transmitting the coded video file to the external apparatus. By preparing the video file with appropriate resolution and format according to the external apparatus specifications beforehand, the system avoids the need for real-time conversion at the external apparatus, thereby maintaining high reproduction and display quality while ensuring broad compatibility across different devices
2Speed
If real-time processing is conducted to enable faster reproduction and display, then responsiveness improves, but reproduction and display quality deteriorates and costs increase
Solution Approach 1:
The system performs all necessary resolution conversion and format conversion processes during the video coding stage before transmission, rather than conducting real-time processing at the external apparatus. This preliminary preparation enables the external apparatus to immediately reproduce and display the video file upon receiving it, achieving both fast responsiveness and high reproduction quality without requiring expensive real-time processing hardware
3Speed
If the video coding apparatus generates coded video files in multiple formats according to external apparatus specifications, then immediate responsiveness is achieved, but device complexity increases
Solution Approach 1:
The video coding apparatus includes an apparatus information acquisition unit that obtains specifications of external apparatuses in advance, and a coded video file generation unit that generates coded video files in appropriate formats according to those specifications before transmission. This preliminary preparation of multiple format versions enables immediate responsiveness when external apparatuses connect, while the complexity is managed through automated format selection based on pre-acquired apparatus information
Solution Approach 2:
The system creates multiple copies of the video content in different coded formats (e.g., different resolutions and container formats) suitable for various external apparatuses. By preparing these format copies in advance during the coding stage, the system enables immediate playback on diverse devices without requiring complex real-time format conversion capabilities at the playback end
Data Source
AI summary
A video-coding apparatus acquires apparatus information from a connected external apparatus and automatically registers the external apparatus. Programs may be encoded in a file format appropriate for at least one external apparatus registered for the same program. A coded video file may be generated and stored. When the external apparatus is connected, a previously generated coded video file may be selected for playback by the external apparatus.