Video Playback Bit Rate Estimation via Throughput Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for estimating video playback bit rate are imprecise, especially when video delivery servers use multiple delivery modes, leading to significant deviations between estimated and actual playback rates.
Innovation Solution
A device and method that divide communication throughput into periods corresponding to each delivery mode and estimate playback bit rate based on these divisions, improving precision by using throughput from modes with high correlation to actual playback rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the average communication rate is simply assumed to be equal to the playback bit rate, then the estimation method is simple and easy to implement, but the precision of the estimated playback rate is low when communication time deviates from video playback time
Solution Approach 1:
The patent segments the communication process into multiple delivery modes (initial burst mode and throttling mode) and calculates separate average communication rates for each mode. This segmentation allows the system to account for different delivery characteristics and select the appropriate rate for playback estimation, thereby improving precision while maintaining reasonable complexity.
2Ease of operation
If the average communication rate in the entire communication period is used as the playback rate without considering delivery modes, then the calculation is straightforward, but the estimated playback rate significantly deviates from the actual playback rate when multiple delivery modes are used
Solution Approach 1:
The patent divides the communication period into distinct delivery modes (initial burst and throttling) and calculates separate average communication rates for each mode. This segmentation enables the system to capture the nuanced characteristics of different delivery phases, significantly improving the accuracy of playback rate estimation compared to using a single overall average.
Solution Approach 2:
The patent applies different estimation approaches to different delivery modes based on their specific characteristics. For initial burst mode, one calculation method is used, while for throttling mode, another method is applied. This local quality approach ensures that each delivery mode is evaluated with the most appropriate metric, enhancing overall estimation accuracy.
3Ease of manufacture
If communication rate is measured during video playback, then the data is readily available from communication logs, but the measured rate does not accurately reflect the actual playback rate when delivery modes cause temporal mismatches
Solution Approach 1:
The patent segments the communication data by delivery mode and calculates separate average communication rates for initial burst mode and throttling mode. This segmentation allows the system to match the appropriate measured rate with the corresponding playback phase, improving the correlation between measured and actual playback rates despite the availability of only communication log data.
Data Source
AI summary
A throughput division means (11) divides a throughput of a communication between a video delivery server configured to deliver, in a plurality of delivery modes, video data to a user terminal device used by a user and the user terminal device in a delivery period of the video data, according to a period of each delivery mode. A playback bit rate estimation means (12) estimates a playback bit rate of the video data, based on a throughput divided according to a period of the delivery mode. Thus, estimation precision of a video playback bit rate can be improved even when a video delivery server delivers video data in a plurality of delivery modes.