Digital Media Recorder Transcoding for Device Compatibility
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Solution Overview
Problem
Current digital video recorders (DVRs) and media communication systems lack the ability to efficiently transcode and distribute media content to various devices with different operating characteristics, such as screen resolution, audio systems, and computing resources, which can result in incompatible content playback and limitations in user convenience.
Innovation Solution
A digital media recorder (DMR) system that operates within an interactive television (iTV) or interactive media communication system (iMCS), capable of transcoding recorded media content according to the operating characteristics of requesting communication devices, including determining necessary parameters from user profiles or device requests, and transmitting the transcoded content for seamless playback across different devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If media content is recorded and stored in a standardized format, then storage efficiency and management are improved, but compatibility with diverse communication devices is worsened
Solution Approach 1:
The system changes the parameters of media content through transcoding operations, converting from a standardized recording format to device-specific playback formats. The transcoder modifies video resolution, audio codecs, and container formats based on the requesting device's capabilities, thereby resolving the contradiction between standardized storage and diverse device compatibility
Solution Approach 2:
The transcoder acts as an intermediary component between the media recorder and communication devices. It receives requests from various devices, determines their specific requirements, and converts the standardized recorded content into appropriate formats, serving as a mediator that enables compatibility without requiring changes to either the storage system or the diverse device ecosystem
2Adaptability or versatility
If transcoding is performed for every device request, then device compatibility is improved, but system complexity and processing time are worsened
Solution Approach 1:
The system performs preliminary actions by pre-analyzing device capabilities and caching transcoded versions for commonly requested device types. The profile database stores pre-determined format specifications for various device categories, allowing the system to quickly retrieve and apply appropriate transcoding parameters without performing complex analysis for every single request
Solution Approach 2:
The transcoder efficiently handles parameter changes by using template-based transcoding configurations stored in the profile database. Instead of creating complex transcoding logic for each device, the system retrieves pre-defined parameter sets based on device type and applies them, reducing system complexity while maintaining comprehensive device compatibility
3Adaptability or versatility
If transcoding is performed for every device request, then device compatibility is improved, but processing time and energy consumption are worsened
Solution Approach 1:
The system performs preliminary transcoding for commonly requested device formats and caches the results. When the same device type requests content again, the pre-transcoded version is retrieved from cache rather than being transcoded again, significantly reducing energy consumption for repeated requests while maintaining full device compatibility
Solution Approach 2:
The system applies partial transcoding by only converting the specific portions of media content that differ between the source format and the target device format. Instead of completely re-encoding all content, the transcoder performs selective parameter adjustments and conversions, reducing processing time and energy consumption while still achieving full compatibility
4Adaptability or versatility
If full media content is transmitted to all requesting devices, then content availability is improved, but network bandwidth consumption and transmission time are worsened
Solution Approach 1:
The system applies local quality adaptation by transmitting media content in the specific format required by each requesting device rather than using a universal format. The transcoder analyzes individual device capabilities and delivers optimally formatted content to each device, ensuring full content availability while minimizing network bandwidth consumption through format-specific optimization
Solution Approach 2:
The system changes transmission parameters dynamically based on device requirements, adjusting video resolution, bitrate, and format to match each device's capabilities. This ensures that content is transmitted in the most efficient format for each specific device, maintaining full availability while reducing overall network bandwidth consumption compared to transmitting identical content to all devices
Data Source
AI summary
A system that incorporates teachings of the present disclosure may include, for example, a digital video recording (DVR) system having a controller to record video content supplied by an interactive television (iTV) communication system as directed by a plurality of users of the iTV communication system, receive from a communication device of one of the plurality of users a request for a portion of the recorded video content, identify a need to transcode the requested portion of the recorded video content according to one or more operating characteristics of the communication device, transcode the requested portion of the recorded video content to conform with the one or more operating characteristics of the communication device, and transmit to the communication device the transcoded video content. The DVR system can be located outside of the premises of each of the plurality of users. Other embodiments are disclosed.