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Video playback system

A technology of video playback and video player, which is applied in the direction of digital video signal modification, image communication, selective content distribution, etc., and can solve the problems of inability to obtain information and inability to satisfy retrospective queries, etc.

Active Publication Date: 2020-07-24
北京数智鑫正科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some cases, it is necessary to query real-time video data before a specific time, such as data before 6 months. If all data are deleted, relevant information will not be obtained, and the requirements for retrospective queries cannot be met.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] In this embodiment, the resolution of the second compressed video is 1 / N of the resolution of the real-time video compressed in the second compression process 2 , N represents the second compression ratio, and W 0 and H 0 relevant. In one example, N is ⌊W 0 / W P ⌋ and ⌊H 0 / H P The smaller of ⌋, W 0 *H 0 is the resolution of the real-time video compressed in the second compression process, W P *H P is the default minimum resolution. That is, the resolution W of the second compressed video 1 *H 1 with the resolution of the real-time video compressed during the second compression W 0 *H 0 The relationship is: W 1 =W 0 / N,H 1 =H 0 / N. In a specific example, the preset minimum resolution W P *H P It can be 320*240, that is, N is ⌊W 0 / 320 ⌋ and ⌊H 0 / 240⌋, so that the minimum resolution of the compressed video in the second compression process is 320*240. In an example, when the resolution of the real-time video is 1920*1080, N is the smaller 4 of ⌊19...

Embodiment 2

[0059] In this embodiment, the resolution of the second compressed video is 1 / N of the resolution of the real-time video compressed in the second compression process 2 , N represents the second compression ratio, and W 0 and H 0 relevant. In one example, N is W 0 / W P and H 0 / H P The smaller of, W 0 *H 0 is the resolution of the real-time video compressed in the second compression process, W P *H P is the default minimum resolution. That is, the resolution W of the second compressed video 1 *H 1 with the resolution of the real-time video compressed during the second compression W 0 *H 0 The relationship is: W 1 =W 0 / N,H 1 = H 0 / N. In a specific example, the preset minimum resolution W P *H P It can be 320*240, that is, N is ⌊W 0 / 320 ⌋ and ⌊H 0 / 240⌋, so that the minimum resolution of the compressed video in the second compression process is 320*240.

[0060] In this embodiment, if N obtained based on the resolution of the compressed real-time video a...

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PUM

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Abstract

The invention provides a video playing system, which includes: a memory, a processor, a video player and at least one display screen. The processor is used to respectively perform first compression and second compression on the video stored in the memory, whose compression flag represents uncompressed video and whose video access time exceeds the preset deletion period, to form the first compressed video and the second compressed video, The resolution of the first compressed video is equal to the resolution of the real-time video, and the number of frames is lower than that of the real-time video. The resolution of the second compressed video is lower than the resolution of the real-time video, and the number of frames is equal to the number of frames of the real-time video. The compressed video is appended to the second compressed video to form a combined compressed video with demarcation marks. The video player is used to synchronously play the first compressed video and the second compressed video on the display screen. The present invention can store video data for a long period of time as much as possible and meet the requirement of backtracking query.

Description

technical field [0001] The invention relates to a video playing system, in particular to a compressed video playing system. Background technique [0002] With the advent of the Internet age, video data has become an important means of obtaining information in human life. However, the video data is very large, especially the video data stored in real time is particularly large, such as surveillance video, which takes up a large amount of memory space, and a large amount of video data is useless. Therefore, some video data must be deleted every once in a while (for example, 3-6 months), otherwise the memory space will not fit. However, in some cases, it is necessary to query real-time video data before a specific time, for example, if the data before 6 months is deleted, relevant information will not be obtained, and the requirements for retrospective query cannot be met. [0003] Therefore, there is an urgent need for a video processing solution that can store video data fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/41H04N21/431H04N21/43H04N21/433H04N21/4402H04N19/42
CPCH04N21/433H04N21/440263H04N21/440281H04N19/42
Inventor 高可
Owner 北京数智鑫正科技有限公司