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High-fidelity video stream compression control method

A technology of compression control and video streaming, which is applied in the field of video processing, can solve unexisting problems, and achieve the effect of small amount of calculation and no time lag

Pending Publication Date: 2022-01-21
FOCUS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no in-depth consideration of the application in the prior art

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Examples

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Embodiment Construction

[0017] figure 1 For the concrete flowchart that video compression realizes in the present invention, concrete steps have:

[0018] Step 1: Compare the resolution of the input video with the resolution of the target video (both the set long side and short side are greater than the target resolution 960 and 540), and obtain the resolution of the output video.

[0019] Step 2: Obtain the number of pixels of the video according to the resolution of the output video. Get the bitrate of the output video by bitrate multiplier.

[0020] Step 3: Encode / decode the video according to the calculated output resolution, resolution, and other default parameters of the video to obtain the compressed video.

[0021] 1. The original video size of the 1-minute video taken by the test mobile phone is 304M, and the compressed size is 15M. The compression rate can reach 20 times (1 / 20);

[0022] 2. The test video compression time is 38 seconds for 304M, and the upload time is 15 seconds based on...

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Abstract

A high-fidelity video stream compression control method comprises the following steps: 1) acquiring the resolution of an input video and comparing the resolution with a target resolution 960 * 540, and if both a long side and a short side are greater than the target resolution 960 and 540, scaling the long side and the short side to be greater than or equal to the resolution 960 or 540 in an equal ratio; if any long side or short side of the input resolution is smaller than 960 or 540, the output resolution being the existing input video resolution; 2) acquiring a bit rate of an input video and an output bit rate, wherein the input video bit rate is obtained by directly reading an input video; the size of the output bit rate is the number of output pixel points * the bit multiple; 3) comparing the input video bit rate with the calculation bit rate, and if the bit rate is greater than the original video bit rate, using the original video bit rate; and 4) encoding, decoding and compressing the original input video into an output video through a graphics processor of the mobile equipment according to the set output video size and the output bit rate parameter.

Description

technical field [0001] The invention relates to a design scheme and belongs to the technical field of video processing, in particular to a video stream compression control method. Background technique [0002] MPEG-1 standard video coding part adopts motion compensation inter-frame prediction, two-dimensional DCT, VLC run-length coding and other measures. In addition, concepts such as intra frame (I), predictive frame (P), bidirectional predictive frame (B) and DC frame (D) are introduced to further improve the coding efficiency. On the basis of MPEG-1, the MPEG-2 standard has made some improvements in terms of improving image resolution and being compatible with digital TV. For example, the accuracy of its motion is half a pixel; Distinguish between "frame" and "field"; introduce coding scalability techniques, such as spatial scalability, temporal scalability, and signal-to-noise ratio scalability. The MPEG-4 standard launched in recent years introduces coding based on Au...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/115H04N19/146
CPCH04N19/115H04N19/146
Inventor 杨敏
Owner FOCUS TECH
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