WO2017107206A1

WO2017107206A1 - Method and system for video compression

Info

Publication number: WO2017107206A1
Application number: PCT/CN2015/099028
Authority: WO
Inventors: 王晓光
Original assignee: 王晓光
Priority date: 2015-12-25
Filing date: 2015-12-25
Publication date: 2017-06-29
Also published as: CN107211107A

Abstract

Disclosed in the present invention is a method for compressing a video software, the method comprising the following steps: performing loss compression on an original video file to obtain a compressed file; calculating a ratio between the compressed file and the original file; if the ratio is smaller than a threshold value, compressing the original video file through lossless compression. The technical solution provided in the present invention has the advantage of lowering loss rate.

Description

Video compression method and system

Technical field

The present invention relates to the field of images, and in particular, to a video compression method and system.

Background technique

Video refers to various technologies that capture, record, process, store, transmit, and reproduce a series of still images as electrical signals. When continuous image changes exceed 24 frames per second, the human eye cannot distinguish a single static image according to the principle of visual persistence; it looks like a smooth continuous visual effect, so that the continuous picture is called video. Video technology was first developed for television systems, but has now evolved into a variety of formats for consumers to record video. The development of network technology has also caused video recording segments to exist on the Internet in the form of streaming media and can be received and played by computers. Video and film belong to different technologies, and the latter uses photography to capture dynamic images as a series of still photos.

The existing video formats include H.264, MPEG-4, MPEG-6 and other formats. The existing video software compresses the video, but the existing compression has damage to the video, which is usually called lossy rate. The existing video compression method has a high loss rate, which affects the clarity of the video.

technical problem

The application provides a compression method of video software. It solves the shortcomings of the prior art video compression loss rate is too high.

Technical solution

In one aspect, a method of compressing video software is provided, the method comprising the steps of:

Performing lossy compression processing on the original video file to obtain a compressed file;

Calculate the ratio of the compressed file to the original file;

If the ratio is less than the set threshold, the original video file is compressed by using a lossless compression process.

Optionally, the method further includes:

If the ratio is greater than the set threshold, the compressed file will be sent.

Optionally, the method further includes: transmitting the losslessly compressed video file over an IP network.

In another aspect, a compression system for video software is provided, the system comprising:

A lossy compression unit, configured to perform lossy compression processing on the original video file to obtain a compressed file;

a calculation unit, configured to calculate a ratio of the compressed file to the original file;

The lossless compression unit is configured to compress the original video file by using a lossless compression process if the ratio is less than a set threshold.

Optionally, the system further includes:

The sending unit is configured to send the lossy compressed file if the ratio is greater than a set threshold.

Optionally, the sending unit is further configured to send the lossless compressed video file over an IP network. This method is to avoid the waste of traffic through other wireless networks.

Beneficial effect

The technical solution provided by the present invention compresses the original file of the video, so it has the advantage of low loss rate.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a flowchart of a method for compressing video software according to a first preferred embodiment of the present invention;

2 is a structural diagram of a compression system of video software according to a second preferred embodiment of the present invention.

Embodiments of the invention

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Please refer to FIG. 1. FIG. 1 is a method for compressing video software according to a first preferred embodiment of the present invention. The method is as shown in FIG.

Step S101: Perform a lossy compression process on the original video file to obtain a compressed file.

Step S102: Calculate a ratio of the compressed file to the original file;

Step S103: If the ratio is less than the set threshold, the original video file is compressed by using a lossless compression process.

The technical solution provided by the invention compares and treats the lossy compressed file, and replaces the lossy compression into lossless compression when determining that the lossy compressed file is lower than a set value, thereby reducing the loss rate of the video compression. .

Optionally, after the step S103, the foregoing method may further include:

The losslessly compressed video file is sent over an IP network. This method is to avoid the waste of traffic through other wireless networks.

Please refer to FIG. 2. FIG. 2 is a video system compression system according to a second preferred embodiment of the present invention. The system is as shown in FIG. 2, and includes:

The lossy compression unit 201 is configured to perform lossy compression processing on the original video file to obtain a compressed file.

The calculating unit 202 is configured to calculate a ratio of the compressed file to the original file;

The lossless compression unit 203 is configured to compress the original video file by using a lossless compression process if the ratio is less than the set threshold.

Optionally, the above system may further include:

The sending unit 204 is configured to send the lossy compressed file if the ratio is greater than a set threshold.

Optionally, the sending unit 204 is further configured to send the losslessly compressed video file over an IP network. This method is to avoid the waste of traffic through other wireless networks.

It should be noted that, for the foregoing various method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not described in detail in a certain embodiment can be referred to the related descriptions of other embodiments.

A person skilled in the art may understand that all or part of the various steps of the foregoing embodiments may be performed by a program to instruct related hardware. The program may be stored in a computer readable storage medium, and the storage medium may include: Flash drive, read-only memory (English: Read-Only Memory, referred to as: ROM), random accessor (English: Random Access Memory, referred to as: RAM), disk or CD.

The content downloading method and the related device and system provided by the embodiments of the present invention are described in detail above. The principles and implementation manners of the present invention are described in the specific examples. The description of the above embodiments is only used to help understand the present invention. The method of the invention and its core idea; at the same time, for the person of ordinary skill in the art, according to the idea of the present invention, there are some changes in the specific embodiment and the scope of application. In summary, the content of the specification should not be understood. To limit the invention.

Claims

A method for compressing video software, characterized in that the method comprises the following steps:

Performing lossy compression processing on the original video file to obtain a compressed file;

Calculate the ratio of the compressed file to the original file;

If the ratio is less than the set threshold, the original video file is compressed by using a lossless compression process.
The method of claim 1 further comprising:

If the ratio is greater than the set threshold, the compressed file will be sent.
The method of claim 1, further comprising transmitting the losslessly compressed video file over an IP network.
A compression system for video software, characterized in that the system comprises:

A lossy compression unit, configured to perform lossy compression processing on the original video file to obtain a compressed file;

a calculation unit, configured to calculate a ratio of the compressed file to the original file;

The lossless compression unit is configured to compress the original video file by using a lossless compression process if the ratio is less than a set threshold.
The system of claim 4, wherein the system further comprises:

The sending unit is configured to send the lossy compressed file if the ratio is greater than a set threshold.
The system of claim 5 wherein:

The sending unit may be further configured to send the losslessly compressed video file over an IP network. This method is to avoid the waste of traffic through other wireless networks.