Transcoder Bitstream Conversion Between Lossless Coding Methodologies
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Video encoding technologies often limit compression codecs due to power, latency, computational complexity, licensing, or compatibility issues, resulting in less efficient data compression and reduced video quality, especially when using non-arithmetic coding methodologies like CAVLC instead of more efficient methods like CABAC.
Innovation Solution
Incorporating a transcoder system between encoders and decoders that converts bitstreams from one lossless coding methodology, such as CAVLC, to another, like CABAC, to take advantage of more efficient compression without requiring support for the new methodology at the encoder or decoder, thereby reducing bandwidth and improving video quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a less efficient compression codec (e.g., CAVLC) is used due to power, latency, computational complexity, licensing, or compatibility constraints, then device complexity and compatibility are improved, but bandwidth consumption increases and video quality deteriorates
Solution Approach 1:
The patent introduces a transcoder as an intermediary component positioned between the encoder and decoder in the content distribution system. This transcoder receives the bitstream encoded with a less efficient codec (e.g., CAVLC) and re-encodes it using a more efficient codec (e.g., CABAC), thereby reducing bandwidth consumption without requiring changes to the original encoder or decoder. The transcoder acts as a mediator that resolves the contradiction by enabling efficient compression in the distribution path while maintaining compatibility with existing encoding and decoding infrastructure.
2Device complexity
If a less efficient compression codec is used due to power, latency, computational complexity, licensing, or compatibility constraints, then device complexity and compatibility are improved, but video quality deteriorates
Solution Approach 1:
The transcoder serves as an intermediary that improves video quality by applying more advanced compression algorithms (e.g., CABAC) to the bitstream after it has been encoded with a simpler codec. This allows the system to achieve higher video quality without increasing the complexity of the original encoder, as the quality enhancement occurs at the transcoder stage in the distribution path.
3Quantity of substance
If a more efficient compression codec (e.g., CABAC) is used, then bandwidth consumption is reduced and video quality is improved, but device complexity and compatibility requirements increase
Solution Approach 1:
The transcoder acts as a compatibility bridge that enables the use of advanced codecs like CABAC in the distribution path without requiring the encoder or decoder to support these codecs. The transcoder handles the conversion, thereby maintaining codec compatibility across the system while still achieving the bandwidth and quality benefits of more efficient compression methods.
Solution Approach 2:
The patent segments the encoding process into distinct stages: the original encoder uses a simple codec for initial compression, the transcoder applies advanced compression to the encoded bitstream, and the decoder processes the final compressed output. This segmentation allows each component to use the most appropriate codec for its specific function, optimizing overall system performance without requiring all components to support all codec types.
Data Source
AI summary
Examples of systems, apparatuses, and methods for to transcoding a bitstream are described herein. An example content distribution system may include an interconnect configured to provide encoded video data from an encoder to a decoder. The interconnect is configured to receive a bitstream including the encoded video data from the encoder. The bitstream is encoded using a first lossless coding methodology. The interconnect including a transcoder configured to transcode the bitstream using a second lossless coding methodology to provide a transcoded bitstream.