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Method and device for realizing backward playing of video file

A video file and file technology, applied in color TV parts, TV system parts, digital video signal modification, etc., can solve the problems of reducing the efficiency of decoding and display, and achieve the effect of improving operating efficiency

Inactive Publication Date: 2016-01-06
SHENZHEN ZTE NETVIEW TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen from this that in the above-mentioned existing video file playback method, a sequence set needs to be decoded multiple times to complete the display, which reduces the efficiency of decoding and display

Method used

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  • Method and device for realizing backward playing of video file
  • Method and device for realizing backward playing of video file
  • Method and device for realizing backward playing of video file

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Embodiment Construction

[0039] The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific examples, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention .

[0040] Such as figure 2 as well as image 3 As shown, the embodiment of the present invention provides a kind of method that realizes video file reversing, comprises the following steps:

[0041] S10, obtain the video file, and load the corresponding SDK file;

[0042] For example, obtain a stored video file locally, and load the SDK file of the corresponding manufacturer according to the manufacturer type of the video file, wherein the SDK file encapsulates the decoding library, decodes the video data, resets the video decoding position, etc. The operation is provided as an interface for the reverse order display application program to call.

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Abstract

The invention discloses a method and a device for realizing backward playing of a video file. The method comprises the steps of acquiring a video file, and loading a corresponding SDK file; determining at least one video frame sequence fragment from the video file frame sequence according to an inputted video backward playing instruction, and using index information of a reference I frame of the video frame sequence fragment header to act as input parameters of an SDK interface so as to call the SDK file, thereby acquiring YUV frame sequence fragment data after sequential decoding of the video frame sequence and corresponding timestamp information, and caching the YUV frame sequence fragment data and the corresponding timestamp information to at least one buffer area; and displaying the YUV frame sequence fragment data in the at least one buffer area in a inverted sequence according to the timestamp information. By adopting the technical scheme provided by the invention, only one time of decoding is required to be carried out on the same video frame sequence set, and then inverted-order display is carried out, thereby effectively improving the running efficiency of programs.

Description

technical field [0001] The present invention relates to the technical field of video playback, in particular to a method and device for realizing reverse playback of video files. Background technique [0002] In people's daily life, a certain entertainment effect can be obtained by playing audio-visual works backwards. In the application of video surveillance field, by playing the saved video files in reverse order, users can quickly find the video images that users want to obtain, but most of the existing mainstream players do not support the reverse playback of video files. With the development of the development, the application of reverse playback technology will attract more and more people's attention. [0003] The method that prior art realizes video file to put backward is: as figure 1 As shown, in the video file, read the P frame (non-reference frame) data between two I frames (reference frame), and combine the I frame data before the first P frame to form a seque...

Claims

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Application Information

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IPC IPC(8): H04N5/76H04N19/44H04N21/2387H04N21/8547H04N7/18
Inventor 张术
Owner SHENZHEN ZTE NETVIEW TECH
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