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Video decoding and editing method and device, equipment and storage medium

A video editing and video decoding technology, which is applied in the field of video decoding and editing, and can solve the problems of large number of video frames, reduced decoding speed, time-consuming decoding, etc.

Active Publication Date: 2020-12-01
BIGO TECH PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, video editing systems usually use software decoding to decode each video frame in the video, and after video encoding, there are intra-frame coding frames (I frames), inter-frame predictive coding frames (P frames) and bidirectional predictive coding frames (B frames). , at this time, when decoding P frames and B frames in the video, it is necessary to find the previous I frame, and decode sequentially from the I frame, so as to obtain the decoded P frame and B frame; if a continuous picture in the video The group (Group of Pictures, GOP) is large. When decoding P frames and B frames, starting from the found I frame, the number of participating video frames is large, resulting in time-consuming decoding and greatly reducing the decoding speed.

Method used

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  • Video decoding and editing method and device, equipment and storage medium
  • Video decoding and editing method and device, equipment and storage medium

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Experimental program
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Embodiment 1

[0038] Figure 1A It is a flow chart of a video decoding method provided by Embodiment 1 of the present invention, and this embodiment can be applied to the case of decoding any frame in a video. A video decoding method provided in this embodiment can be performed by the video decoding device provided in the embodiment of the present invention, and the device can be realized by means of software and / or hardware, and integrated into a device that executes the method. The device can be any Android device capable of video decoding.

[0039] Specifically, refer to Figure 1A , the method may include the following steps:

[0040] S110. Determine the image analysis accuracy of the video editing instruction for the current frame.

[0041] Specifically, in order to increase the display effect of the video, a series of editing will be performed on the video. The user pre-inputs the video to be edited in the video editing system, and selects the video frame currently designated for edi...

Embodiment 2

[0056] Figure 2A It is a flowchart of a video decoding method provided in Embodiment 2 of the present invention, Figure 2B It is a schematic diagram of the principles of the video decoding process provided by Embodiment 2 of the present invention. This embodiment is optimized on the basis of the foregoing embodiments, and this embodiment mainly describes decoders used in different decoding scenarios.

[0057] optional, such as Figure 2A As shown, this embodiment may include the following steps:

[0058] S210. Determine the image analysis accuracy of the current frame by the video editing instruction.

[0059] S220. If the video editing instruction requires inaccurate analysis of the current frame, use a software decoder to decode the first intra-coded frame in the video that is adjacent to the current frame in the forward direction, as the decoding result of the current frame.

[0060] Specifically, if the video editing instruction requires an inaccurate analysis of the...

Embodiment 3

[0068] image 3 It is a flow chart of a video editing method provided by Embodiment 3 of the present invention, and this embodiment can be applied to editing any frame in a video. A video editing method provided in this embodiment can be executed by the video editing device provided in the embodiment of the present invention, and the device can be realized by means of software and / or hardware, and integrated into a device for executing the method. The device can be any Android device capable of video editing.

[0069] optional, such as image 3 As shown, this embodiment may include the following steps:

[0070] S310. Decapsulate the video to be edited, obtain a corresponding video frame sequence, and obtain a video editing instruction.

[0071] Specifically, the video to be edited in this embodiment is encoded and encapsulated. In order to determine the current frame corresponding to the subsequent decoding, this embodiment can decapsulate the video to be edited to obtain t...

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PUM

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Abstract

The invention discloses a video decoding and editing method and device, equipment and a storage medium. The video decoding method comprises the following steps: if a video editing instruction requiresthat a picture of a current frame is not accurately analyzed, decoding a first intra-frame coding frame, which is adjacent to the forward direction of the current frame, in a video to serve as a decoding result of the current frame; if the video editing instruction requires to accurately analyze the pictures of the continuous video frames where the current frame is located, decoding the video frames from the target frame to the current frame in the video to obtain a decoding result of the current frame; and if the video editing instruction requires to accurately analyze the picture of the discontinuous video frame where the current frame is located, decoding the video frame from the first intra-frame coding frame adjacent to the forward direction of the current frame to the current framein the video to obtain a decoding result of the current frame. According to the technical scheme provided by the embodiment of the invention, different decoding strategies are adopted in different decoding scenes of the current frame, so that the decoding speed of the current frame is increased.

Description

technical field [0001] Embodiments of the present invention relate to the field of video processing, and in particular, to a video decoding and editing method, device, device, and storage medium. Background technique [0002] With the development of the Internet and communication technology, more and more users record daily information by recording videos on Android mobile phones. At the same time, the video editing system of the user terminal decodes the video frames to be edited in the recorded video, and processes each video frame. Edit to beautify the video. [0003] At present, video editing systems usually use software decoding to decode each video frame in the video, and after video encoding, there are intra-frame coding frames (I frames), inter-frame predictive coding frames (P frames) and bidirectional predictive coding frames (B frames). , at this time, when decoding P frames and B frames in the video, it is necessary to find the previous I frame, and decode seque...

Claims

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Application Information

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IPC IPC(8): H04N21/234H04N19/44H04N19/42H04N21/44H04N19/593
CPCH04N21/234H04N21/44H04N19/42H04N19/44H04N19/593
Inventor 王新宁
Owner BIGO TECH PTE LTD