Focal-Area Video Streaming with Differential Bit Rates
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Solution Overview
Problem
Existing video streaming technologies face challenges in delivering high-quality video content without interruptions under network bandwidth constraints, leading to increased bandwidth demands and potential disruptions.
Innovation Solution
A method that generates and streams both a low bit rate version of video content and a high bit rate portion corresponding to the viewer's focal area, combining these streams to maintain quality in the focal area while reducing overall bandwidth usage, using techniques like lossy compression and focal area detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high bit rate version of video content is streamed to maintain quality, then video quality is improved, but network bandwidth consumption increases
Solution Approach 1:
The patent applies local quality by encoding different portions of the video content at different bit rates based on their importance. Specifically, the video is divided into multiple portions, and a first portion containing important visual information (such as focal areas or regions of interest) is encoded at a higher bit rate to maintain quality, while a second portion is encoded at a lower bit rate. This selective quality approach ensures that video quality is maintained where it matters most while reducing overall bandwidth consumption.
Solution Approach 2:
The patent segments the video content into multiple portions for differential encoding. The video stream is divided into a first portion and a second portion, which are then encoded separately at different bit rates. This segmentation allows the system to apply different quality levels to different parts of the content, optimizing the trade-off between video quality and bandwidth usage by transmitting only the necessary quality level for each segment.
2Quantity of substance
If video content is compressed to reduce bandwidth usage, then network bandwidth requirements are reduced, but video quality deteriorates
Solution Approach 1:
The patent implements local quality by applying different compression levels to different portions of the video content. Important portions (first portion) are compressed less to maintain quality, while less critical portions (second portion) are compressed more aggressively. This approach reduces overall bandwidth requirements while preserving video quality in the most important areas, effectively managing the trade-off between compression and quality.
Solution Approach 2:
The patent segments the video content into multiple portions that are compressed at different rates. By dividing the video stream and applying differential compression to each segment, the system achieves overall bandwidth reduction while maintaining quality where it matters most. The segmented approach allows selective application of compression algorithms based on the importance of each video portion.
3Ease of manufacture
If uniform bit rate is applied to entire video content, then encoding simplicity is maintained, but bandwidth efficiency is reduced
Solution Approach 1:
The patent segments the video content into multiple portions for differential encoding, which improves bandwidth efficiency while maintaining reasonable encoding complexity. The segmentation is performed in a manner that balances the need for quality optimization with the practical constraints of encoding complexity. By dividing the video into manageable portions with different quality requirements, the system achieves better bandwidth efficiency without excessive encoding complexity.
Data Source
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AI summary
A method for displaying content is provided. One embodiment of the method includes determining a focal area of a viewer of a content item displayed on a display device, retrieving a low bit rate version of the content item, retrieving a portion of a high bit rate version of the content item corresponding to the focal area, combining the portion of the high bit rate version of the content with the low bit rate version of the content item to generate a combined image, and causing the combined image to be displayed to the viewer via the display device. Systems perform similar steps and non-transitory computer readable storage mediums each store one or more computer programs are also provided.