Self-adaptive adjustment method for teaching video playing speed

A technology for self-adaptive adjustment and playback speed, applied in image communication, selective content distribution, electrical components, etc., which can solve problems such as affecting learning effect and unable to adapt to the needs of different viewers.
CN109889918AActive Publication Date: 2019-06-14SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
Publication Date
2019-06-14

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Abstract

The invention discloses an adaptive adjustment method for teaching video playing speed. The adaptive adjustment method comprises the following steps: constructing a general pheromone matrix, a classification pheromone matrix and a speed migration parameter matrix of a video by utilizing T time periods of the video and m preset playing speeds; collecting preview feedback of the viewers to classifythe viewers; calculating an initial playing speed according to the viewer type; in the watching process, according to the speed migration parameter matrix, the playing speed of the current time period, and the general pheromone matrix and the classification pheromone matrix which are updated after the previous watcher watches, calculating the probability that the playing speed is changed into eachspeed of m speeds when the current watcher watches the next time period; adjusting the playing speed of the current viewer in the next time period according to the probability; after playing, generating a playing speed path of the video watched by the current viewer; and collecting after-class feedback of the viewer and updating the general pheromone matrix and the classification pheromone matrixaccording to the after-class feedback and the playing speed path.
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Description

technical field

[0001] The invention relates to an adaptive adjustment method for teaching video playback speed, which belongs to the field of computer applications. Background technique

[0002] In the process of online learning by watching videos, the lecturer's speech speed will affect the video viewers' understanding of the material and their enthusiasm for learning. However, viewers with different knowledge bases and different habits often have different requirements for the speaking speed of the lecturer. Not only that, but the optimal teaching speed is also closely related to the course theme of the corresponding interval, the type of lecture content, and the difficulty of the content.

[0003] Most of the existing video speed adjustment methods require the viewer to actively adjust the playback speed during the learning process. However, in order to keep the teaching speed of the parts with different levels of difficulty always in an appropriate range, the speed of...

Claims

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