Multi-dimensional Video Transcoder Format Adaptation
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Solution Overview
Problem
Existing 2-D video transcoders are unable to directly apply to multi-dimensional video codec standards due to format mismatches between encoder inputs and decoder outputs, limiting the efficient distribution of multi-dimensional video over constrained networks and devices with limited capabilities.
Innovation Solution
A system and method for transcoding multi-dimensional video that includes a decoder to process a first bitstream, a transcoder to generate transcoded data, and an encoder to produce a second bitstream, utilizing texture and depth atlases, atlas patch occupancy maps, and camera parameters to adapt the content for network bandwidth and device constraints, reducing bitrate and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If existing 2-D video transcoders are used for multi-dimensional video, then the transcoding process can be simplified, but the format mismatch between encoder inputs and decoder outputs prevents direct application
Solution Approach 1:
The patent introduces an intermediary conversion process that transforms decoder outputs into encoder inputs. The transcoder includes a converter that receives decoded multi-dimensional video data and converts it into the specific format required by the encoder, bridging the format mismatch gap between different codec standards.
Solution Approach 2:
The transcoding system is divided into distinct functional segments: a decoder segment that handles decoding according to one codec standard, a converter segment that handles format transformation, and an encoder segment that handles encoding according to another codec standard. This segmentation allows each component to be optimized independently while maintaining overall compatibility.
2Reliability
If multi-dimensional video is distributed over constrained networks, then video quality can be maintained, but network bandwidth requirements are not met
Solution Approach 1:
The transcoder changes key parameters of the multi-dimensional video data including resolution, bitrate, and format during the transcoding process. By adjusting these parameters, the system produces output that consumes less network bandwidth while maintaining acceptable video quality for the target playback device.
Solution Approach 2:
The patent applies different quality levels to different regions or aspects of the video content. The converter optimizes specific portions of the multi-dimensional video data based on their importance and the capabilities of the target device, maintaining high quality for critical regions while reducing quality for less important regions to save bandwidth.
3Adaptability or versatility
If multi-dimensional video is adapted for devices with limited capabilities, then device compatibility is improved, but video resolution and quality are reduced
Solution Approach 1:
The transcoder dynamically adjusts video parameters based on the capabilities of the target device. The system can adapt resolution, format, and other parameters in real-time according to the specific device being targeted, allowing the same source content to be optimized for multiple different device types without manual intervention.
Solution Approach 2:
The patent applies partial transcoding where only certain aspects of the video data are converted rather than the entire dataset. This allows maintaining high resolution for critical visual information while reducing other parameters to match device capabilities, achieving a balance between quality and compatibility.
Data Source
AI summary
An example apparatus for transcoding multi-dimensional video includes a multi-dimensional video decoder to decode a first bitstream of multi-dimensional video. The apparatus also includes a transcoder to transcode the decoded first bitstream to generate transcoded multi-dimensional data. The apparatus also further includes a multi-dimensional video encoder to generate a second bitstream based on the transcoded multi-dimensional data.