Dynamic Bit Rate Selection for Video Streaming Quality
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Solution Overview
Problem
Existing video streaming technologies often result in poor playback quality when bit rate is determined solely based on bandwidth, leading to decreased image quality and potential interruptions, as they fail to consider other factors like display region size and cache amount.
Innovation Solution
An information processing apparatus that dynamically determines the bit rate for video streaming based on a combination of display region size, cache amount, and bandwidth, using image quality evaluation to ensure the bit rate meets certain quality conditions, thereby improving playback quality and reducing interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the bit rate is determined solely based on bandwidth, then the network transmission efficiency is improved, but the image quality of the video deteriorates
Solution Approach 1:
The patent changes the parameter selection criteria from solely bandwidth-based to a composite evaluation including image quality assessment. The system evaluates multiple parameters (bandwidth, display region size, cache amount, and image quality) to dynamically select the optimal bit rate, preventing selection of videos with poor image quality even when bandwidth is sufficient.
Solution Approach 2:
The patent implements a feedback mechanism where the system evaluates image quality of candidate videos and uses this evaluation结果 to adjust bit rate selection. The image quality evaluation feedback ensures that selected videos meet minimum quality thresholds, preventing degradation despite bandwidth-driven bit rate increases.
2Manufacturing precision
If the bit rate is increased to improve image quality, then the image quality is improved, but the network bandwidth consumption increases
Solution Approach 1:
The patent changes the selection parameters from static bandwidth-only criteria to dynamic multi-parameter evaluation including image quality assessment. This allows the system to select appropriate bit rates that balance quality and bandwidth usage based on current network conditions and video quality characteristics.
Solution Approach 2:
The patent applies partial action by selecting bit rates that are sufficient to meet image quality requirements without excessively increasing bandwidth consumption. The system evaluates image quality thresholds and selects the minimum necessary bit rate to achieve acceptable quality, avoiding unnecessary bandwidth waste.
3Quantity of substance
If videos with low bit rates are selected to save bandwidth, then the bandwidth consumption is reduced, but the playback quality deteriorates
Solution Approach 1:
The patent implements feedback through image quality evaluation that prevents selection of videos with unacceptably poor quality. The system continuously evaluates image quality metrics and uses this feedback to reject low-quality candidates even when they offer lower bandwidth consumption, ensuring minimum quality thresholds are met.
Solution Approach 2:
The patent changes the selection criteria from bandwidth-only optimization to a balanced evaluation of bandwidth consumption and image quality. The multi-parameter selection process identifies videos that achieve acceptable quality at lower bit rates rather than simply selecting the lowest bit rate available.
4Adaptability or versatility
If the bit rate is dynamically adjusted based on bandwidth, then the adaptability to network conditions is improved, but the playback continuity deteriorates due to quality degradation
Solution Approach 1:
The patent implements feedback through image quality evaluation that ensures dynamic bit rate adjustments maintain acceptable quality standards. The system evaluates image quality before and during playback, providing feedback that prevents quality degradation below thresholds, thereby maintaining playback continuity even as network conditions change.
Solution Approach 2:
The patent applies dynamics by enabling flexible, real-time adjustment of bit rate selection based on changing network conditions while maintaining quality standards. The system dynamically evaluates available videos and selects appropriate bit rates without causing playback interruptions, adapting to bandwidth changes while preserving playback continuity.
Data Source
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AI summary
An information processing apparatus includes an acquiring unit that acquires image quality information on a video a plurality of segments of which are sequentially delivered in a streaming manner and a bit rate of which is variable during a playback of the video, the image quality information indicating image qualities of one or more segment of the plurality of segments at each of a plurality of bit rates, and a determining unit that determines a bit rate of the one or more segment of the plurality of segments of the video that is played back according to the acquired image quality information.