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A method, device and device for acquiring a video clip
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A technology of video fragments and acquisition methods, which is applied in the field of video processing, can solve the problems of low positioning accuracy, time-consuming, and low efficiency of video fragments, and achieve the effect of improving acquisition efficiency and accuracy, and improving positioning accuracy
Active Publication Date: 2021-07-16
BEIJING CENTURY TAL EDUCATION TECH CO LTD
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Problems solved by technology
At present, the picture information in the video can be analyzed frame by frame or at a certain step length, and then edited according to the analyzed picture information; however, the method of frame-by-frame analysis is very time-consuming and inefficient, and the method of analyzing at a certain step length has clipping The problem of low positioning accuracy of the output video clips
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Embodiment 1
[0047] refer to figure 1 Provided is a flowchart of a method for obtaining a video segment, the method may include the following steps:
[0048] Step S102, acquiring the original video. In this embodiment, the original video can be a video captured by a video image capture device, or a video downloaded from the network, stored locally or uploaded manually, and the original video is a video containing the content of the test questions.
[0049] For the original video, the positioning operations shown in the following steps S104 to S108 can be repeatedly performed until the positioning operation is performed until the end of the original video:
[0050] Step S104, based on the preset step size adjustment strategy, identify the first frame image in the original video that contains the test questions.
[0051] The step size adjustment strategy is based on the result of whether the frame image contains test questions or not, and adjusts the forward step size, as shown in the foll...
Embodiment 2
[0122] refer to Figure 4 A structural block diagram of a device for obtaining video clips is provided, the device comprising:
[0123] Original video acquisition module 410, for obtaining original video;
[0124] The positioning operation repeat execution module 420 is configured to repeatedly perform the following positioning operations until the positioning operation is executed until the end of the original video:
[0125] The identification unit 422 is configured to identify the first frame image containing test questions in the original video based on a preset step adjustment strategy; wherein, the step size adjustment strategy is based on whether the frame image contains test questions or not, and the previous Strategies for progress and adjustment;
[0126] A start frame location unit 424, configured to determine the start frame image of the video segment that includes the test question based on the initial step size and the position of the first frame image;
[012...
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Abstract
The present disclosure relates to a method, device, and equipment for acquiring video clips. The method includes: acquiring an original video; repeatedly performing the following positioning operation until the positioning operation stops when the original video ends: identifying the original video based on a preset step size adjustment strategy; The video contains the first frame image of the test question; based on the initial step size and the position of the first frame image, determine the start frame image containing the test question; based on the step size adjustment strategy, identify the second frame image that does not contain the test question after the start frame image , and based on the initial step size or the position of the initial frame image and the position of the second frame image, determine the end frame image containing the test questions; after that, for the frame images after the end frame image, re-determine the first position when performing the positioning operation next time frame image. When the positioning operation stops, all target video clips containing test questions in the original video are obtained. The present disclosure can improve the acquisition efficiency and accuracy of target video segments.
Description
technical field [0001] The present disclosure relates to the technical field of video processing, and in particular, to a method, device and equipment for acquiring video clips. Background technique [0002] With the popularity of video courses, it has gradually become an important requirement to extract video clips of lecture topics in a video course. At present, the picture information in the video can be analyzed frame by frame or at a certain step length, and then edited according to the analyzed picture information; however, the method of frame-by-frame analysis is very time-consuming and inefficient, and the method of analyzing at a certain step length has clipping The positioning accuracy of the output video clips is low. Contents of the invention [0003] In order to solve the above technical problems or at least partly solve the above technical problems, the present disclosure provides a video clip acquisition method, device and equipment, which can improve the e...
Claims
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