Video preview method and system supporting dynamic definition adjustment
A technology of video preview and dynamic adjustment, applied in image data processing, instruments, electrical components, etc., to achieve high resolution, low pressure, and small picture size
Inactive Publication Date: 2019-08-23
广州优视云集科技有限公司
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Problems solved by technology
[0004] In view of the deficiencies in the prior art, one of the purposes of the present invention is to provide a video preview method that supports dynamic adjustment of definition, which can solve the problem of video preview;
[0005] The second object of the present invention is to provide a video preview system that supports dynamic adjustment of definition, which can solve the problem of video preview;
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[0034] Specific implementation plan
[0035] Hereinafter, the present invention will be further described with reference to the drawings and specific implementation schemes:
[0036] Such as figure 1 As shown, a video preview method that supports dynamic adjustment of definition includes the following steps:
[0037] Step 101: Take screenshots of the video source according to preset rules, and obtain several original screenshots.
[0038] Optionally, the preset rule is generated by taking a screenshot of the video source at regular intervals according to the time sequence of the video source, or extracting one video frame every certain number of video frames according to the time sequence of the video source. Screenshots, or screenshots generated by extracting a video frame at a certain progress ratio in sequence according to the time sequence of the video source to obtain the original screenshot. For example, take a screenshot of the video source every 1 second, that is, the screens...
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The invention relates to a video preview method and system supporting dynamic definition adjustment, and the method comprises the following steps: 101, carrying out the screenshot of a video source according to a preset rule, and obtaining a plurality of original screenshots; 102, splicing the plurality of original screenshots into an image to obtain a spliced image; 103, acquiring a video previewrequest signal, and returning the spliced image and the number A of screenshots in the transverse direction and the number B of screenshots in the vertical direction of the spliced image; 104, performing image cutting on the obtained spliced image to obtain the position of each screenshot in the spliced image; and 105, acquiring a user preview position signal, and displaying the screenshot in thespliced image corresponding to the preview position to complete video preview. The method has the advantages of previewing a small picture size, reducing the pressure on a network, and being high inpreview picture resolution, lower in pressure on a server and capable of adapting to a severe network environment.
Description
Technical field [0001] The invention relates to the technical field of video preview, in particular to a video preview method and system supporting dynamic adjustment of definition. Background technique [0002] At present, there are two main ways to preview video: the first one is to intercept video frames of a certain duration from the video source at intervals, for example, to intercept video frames with a duration of 1-2 seconds at intervals, and then to capture each intercepted video The frames are spliced into a short video, which is used to preview the video source to realize the preview of the video content; the second type is to compress the entire video source with a low frame rate and low resolution to realize the preview of the video source. [0003] For the first method, the advantage is that you can view multiple complete video content within a unit time. The disadvantage is that you cannot manually specify the preview position, and when the video source is long, th...
Claims
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IPC IPC(8): H04N21/431H04N21/433H04N21/4402H04N21/4782H04N21/845G06T3/40
CPCG06T3/4038H04N21/4312H04N21/4334H04N21/440263H04N21/4782H04N21/8456
Inventor 敬祖学
Owner 广州优视云集科技有限公司