CN110856006A - Low-delay live broadcast method and device, storage medium and electronic equipment - Google Patents
Low-delay live broadcast method and device, storage medium and electronic equipment Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/23418—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics
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Abstract
The invention provides a low-delay live broadcast method, a low-delay live broadcast device, a storage medium and electronic equipment, wherein the low-delay live broadcast method comprises the following steps: acquiring a live video image to be transmitted, wherein the live video image comprises a plurality of frames of static pictures; carrying out comparative analysis on the multiple frames of static pictures to extract common constant map information and variable map information in the multiple frames of static pictures; acquiring relation characteristic information between each variable diagram information and the constant diagram information; and sending the constant graph information, the variable graph information and the corresponding relation characteristic information to a client, so that the client generates a corresponding live video image according to the constant graph information, the variable graph information and the corresponding relation characteristic information. As only one constant graph information and a plurality of variable graph information need to be transmitted in the live broadcasting process, the transmission quantity of data is greatly reduced, the live broadcasting delay can be reduced, and the data transmission speed is improved.
Description
Technical Field
The present application relates to the field of data transmission, and in particular, to a low-latency live broadcast method, apparatus, storage medium, and electronic device.
Background
In the prior art, in the high-definition live broadcast process, under the condition of poor network, delay occurs or definition is reduced to avoid delay, so that user experience is poor. The prior art is short of a method for reducing live broadcast delay on the premise of maintaining live broadcast definition.
Therefore, the prior art has defects and needs to be improved urgently.
Disclosure of Invention
The application aims to provide a low-delay live broadcast method, a low-delay live broadcast device, a storage medium and electronic equipment, which can reduce the live broadcast delay.
The invention provides a low-delay live broadcast method, which comprises the following steps:
acquiring a live video image to be transmitted, wherein the live video image comprises a plurality of frames of static pictures;
carrying out comparative analysis on the multiple frames of static pictures to extract common constant map information and variable map information in the multiple frames of static pictures;
acquiring relation characteristic information between each variable diagram information and the constant diagram information;
and sending the constant graph information, the variable graph information and the corresponding relation characteristic information to a client, so that the client generates a corresponding live video image according to the constant graph information, the variable graph information and the corresponding relation characteristic information.
In the low-delay live broadcasting method of the present invention, the step of performing comparative analysis on the plurality of frames of static pictures to extract the constant map information and the variable map information common to the plurality of frames of static pictures includes:
acquiring a preset number of static pictures which are sequentially sequenced;
comparing and analyzing the preset number of static pictures to extract the same parts in the preset number of static pictures as constant picture information;
and subtracting the constant graph information from each static picture in the preset number of static pictures to obtain the preset number of variable graph information.
In the low-delay live broadcasting method of the present invention, the step of obtaining the relationship characteristic information between each piece of the variable map information and the constant map information includes:
and acquiring position information and size proportion information of the variable diagram corresponding to each variable diagram information in the constant diagram corresponding to the constant diagram information, and setting the position information and the size proportion information as relation characteristic information.
In the low-delay live broadcasting method of the present invention, before the step of performing comparative analysis on the plurality of frames of static pictures to extract the constant map information and the variable map information common to the plurality of frames of static pictures, the method further includes:
and sequentially dividing the multi-frame static pictures into a plurality of static picture sets, wherein each static picture set comprises a preset number of static pictures.
In the low-delay live broadcasting method of the present invention, the step of performing comparative analysis on the plurality of frames of static pictures to extract the constant map information and the variable map information common to the plurality of frames of static pictures includes:
sequentially carrying out comparison analysis on two adjacent static pictures to obtain the variable map information between the two adjacent static pictures;
acquiring constant image information of two adjacent static images according to the variable image information between the two adjacent static images;
the step of sending the constant diagram information, the variable diagram information and the corresponding relationship characteristic information to a client comprises:
and sending the common constant image information between the first static image and the second static image in the multiple static images, the variable image information between every two adjacent static images and the corresponding relation characteristic information to a client.
The present invention also provides a low-delay live broadcasting device, including:
the system comprises a first acquisition module, a second acquisition module and a transmission module, wherein the first acquisition module is used for acquiring a live video image to be transmitted, and the live video image comprises multiple frames of static pictures;
the extraction module is used for carrying out comparative analysis on the multiple frames of static pictures so as to extract the common constant map information and variable map information in the multiple frames of static pictures;
the second acquisition module is used for acquiring the relationship characteristic information between each variable diagram information and the constant diagram information;
and the sending module is used for sending the constant map information, the variable map information and the corresponding relation characteristic information to a client so that the client can generate a corresponding live video image according to the constant map information, the variable map information and the corresponding relation characteristic information.
In the low-latency live broadcasting apparatus of the present invention, the extraction module includes:
the device comprises a first acquisition unit, a second acquisition unit and a third acquisition unit, wherein the first acquisition unit is used for acquiring a preset number of static pictures which are sequentially sequenced;
the extraction unit is used for carrying out comparative analysis on the preset number of static pictures to extract the same parts in the preset number of static pictures as constant picture information;
and the second acquisition unit is used for subtracting the constant map information from each of the preset number of static pictures to obtain preset number of variable map information.
In the low-delay live broadcasting device of the present invention, the second obtaining module is configured to obtain position information and size ratio information of a variable diagram corresponding to each variable diagram information in the constant diagram corresponding to the constant diagram information, and set the position information and the size ratio information as relationship characteristic information.
The present invention also provides a storage medium having stored thereon a computer program which, when run on a computer, causes the computer to perform any of the methods described above.
The invention also provides an electronic device comprising a processor and a memory, wherein the memory stores a computer program, and the processor is used for executing the method of any one of the above items by calling the computer program stored in the memory.
As can be seen from the above, the present invention obtains the live video image to be transmitted, where the live video image includes multiple frames of still pictures; carrying out comparative analysis on the multiple frames of static pictures to extract common constant map information and variable map information in the multiple frames of static pictures; acquiring relation characteristic information between each variable diagram information and the constant diagram information; sending the constant map information, each variable map information and corresponding relation characteristic information to a client, so that the client generates a corresponding live video image according to the constant map information, each variable map information and corresponding relation characteristic information; therefore, the fast transmission of live video images is realized, and only one constant graph information and a plurality of variable graph information need to be transmitted in the live broadcasting process, so that the transmission quantity of data is greatly reduced, the live broadcasting delay can be reduced, and the data transmission speed is increased.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a flowchart of a low-latency live broadcasting method according to an embodiment of the present application.
Fig. 2 is a flowchart of a low-latency live broadcasting method according to a second embodiment of the present application.
Fig. 3 is a structural diagram of a low-delay live broadcast device according to a third embodiment of the present application.
Fig. 4 is a preferred structure diagram of a low-delay live broadcast device according to a third embodiment of the present application.
Fig. 5 is a block diagram of an electronic device provided in an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The terms "first," "second," "third," and the like in the description and in the claims of the present application and in the above-described drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the objects so described are interchangeable under appropriate circumstances. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, or apparatus, terminal, system comprising a list of steps is not necessarily limited to those steps or modules or elements expressly listed, and may include other steps or modules or elements not expressly listed, or inherent to such process, method, apparatus, terminal, or system.
Referring to fig. 1, fig. 1 is a flow chart of a low-latency live broadcasting method in some embodiments of the invention. The low-delay live broadcasting method comprises the following steps:
s101, obtaining a live video image to be transmitted, wherein the live video image comprises multiple frames of static pictures.
In this step, the live video is collected by a high-definition camera, and a plurality of frames of still pictures are sequentially arranged according to a shooting time sequence. The live broadcasting method is mainly applied to indoor live broadcasting, for example, in a main live broadcasting performance in a current panda video and audio or fish fighting live broadcasting platform, wherein a background picture of the main live broadcasting performance is still and unchanged.
And S102, carrying out comparative analysis on the multiple static pictures to extract the common constant map information and variable map information in the multiple static pictures.
In this step, a comparison analysis of a preset number of still pictures may be employed. Therefore, before this step is performed, the plurality of still pictures are sequentially divided into a plurality of still picture sets, each still picture set including a preset number of still pictures.
In this step, in an embodiment, the step S102 may specifically include: s1021, acquiring a preset number of static pictures which are sequentially sequenced; s1022, performing comparative analysis on the preset number of static pictures to extract the same parts in the preset number of static pictures as constant image information; and S1023, subtracting the constant graph information from each static picture in the preset number of static pictures to obtain the preset number of variable graph information.
For example, the current live scene is a girl dancing in a room with a doll, and therefore, the constant graph information obtained through a contrastive analysis is the display graph of the room, and the variable graph information is the dynamic or shaking girl and the doll.
S103, acquiring relationship characteristic information between each variable diagram information and the constant diagram information.
In this step, the relationship characteristic information includes: and the position information and the size proportion information of the variable diagram corresponding to each variable diagram information in the constant diagram corresponding to the constant diagram information.
In one embodiment, the step S103 may include: and acquiring position information and size proportion information of the variable diagram corresponding to each variable diagram information in the constant diagram corresponding to the constant diagram information, and setting the position information and the size proportion information as relation characteristic information.
The position information is the position of the doll and the girl in each frame of the static picture, and the size proportion information is the proportion value of the sizes of the doll and the girl to the size of the room under the condition that the doll and the girl are at the current distance from the camera.
And S104, sending the constant map information, the variable map information and the corresponding relation characteristic information to a client, so that the client generates a corresponding live video image according to the constant map information, the variable map information and the corresponding relation characteristic information.
In this step, after the client acquires the constant map information, the variable map information, and the corresponding relationship characteristic information, the client can restore the live video image according to these information.
In some embodiments, the step S102 may specifically include: sequentially carrying out comparison analysis on two adjacent static pictures to obtain the variable map information between the two adjacent static pictures; and obtaining constant image information of two adjacent static images according to the variable image information between the two adjacent static images.
In this case, the step S104 may specifically include: the step of sending the constant diagram information, the variable diagram information and the corresponding relationship characteristic information to a client comprises: and sending the common constant image information between the first static image and the second static image in the multiple static images, the variable image information between every two adjacent static images and the corresponding relation characteristic information to a client.
By adopting the adjacent comparison method, after receiving the common constant image information between the first frame of static image and the second frame of static image and the variable image information between each two adjacent frames of static images, the client can restore the second frame of static image according to the common constant image information between the first frame of static image and the second frame of static image and the common variable image information between the first frame of static image and the second frame of static image. And then, calculating a third frame of static picture according to the second frame of static picture, the variable map information between the second frame of static picture and the third frame of static picture and the corresponding relation characteristic information, thereby sequentially calculating the static pictures of all frames.
As can be seen from the above, the present invention obtains the live video image to be transmitted, where the live video image includes multiple frames of still pictures; carrying out comparative analysis on the multiple frames of static pictures to extract common constant map information and variable map information in the multiple frames of static pictures; acquiring relation characteristic information between each variable diagram information and the constant diagram information; sending the constant map information, each variable map information and corresponding relation characteristic information to a client, so that the client generates a corresponding live video image according to the constant map information, each variable map information and corresponding relation characteristic information; therefore, the fast transmission of live video images is realized, and only one constant graph information and a plurality of variable graph information need to be transmitted, so that the transmission quantity of data is greatly reduced, the live broadcast delay can be reduced, and the data transmission speed is increased.
Referring to fig. 2, fig. 2 is a flow chart of a low-latency live broadcasting method in some embodiments of the invention. The low-delay live broadcasting method comprises the following steps:
s201, obtaining a live video image to be transmitted, wherein the live video image comprises multiple frames of static pictures.
In this step, the live video is collected by a high-definition camera, and a plurality of frames of still pictures are sequentially arranged according to a shooting time sequence. The live broadcasting method is mainly applied to indoor live broadcasting, for example, in a main live broadcasting performance in a current panda video and audio or fish fighting live broadcasting platform, wherein a background picture of the main live broadcasting performance is still and unchanged.
S202, sequentially comparing and analyzing two adjacent frames of static pictures to obtain variable map information between the two adjacent frames of static pictures;
for example, the variation map information is obtained by comparing two adjacent frames of still pictures to obtain the difference between the two adjacent frames of still pictures.
S203, obtaining constant image information of two adjacent static images according to the variable image information between the two adjacent static images;
in this step, in one embodiment, the constant map information is obtained by subtracting the variable map information from each still picture.
For example, the current live scene is a girl dancing in a room with a doll, and therefore, the constant graph information obtained through a contrastive analysis is the display graph of the room, and the variable graph information is the dynamic or shaking girl and the doll.
And S204, acquiring relationship characteristic information between each variable diagram information and the constant diagram information.
In this step, the relationship characteristic information includes: and the position information and the size proportion information of the variable diagram corresponding to each variable diagram information in the constant diagram corresponding to the constant diagram information.
In one embodiment, the step S204 may include: and acquiring position information and size proportion information of the variable diagram corresponding to each variable diagram information in the constant diagram corresponding to the constant diagram information, and setting the position information and the size proportion information as relation characteristic information.
The position information is the position of the doll and the girl in each frame of the static picture, and the size proportion information is the proportion value of the sizes of the doll and the girl to the size of the room under the condition that the doll and the girl are at the current distance from the camera.
And S205, sending the common constant image information between the first frame of static image and the second frame of static image in the multiple frames of static images, the variable image information between each two adjacent frames of static images and the corresponding relation characteristic information to the client.
In this step, after the client acquires the constant map information, the variable map information, and the corresponding relationship characteristic information, the client can restore the live video image according to these information.
By adopting the adjacent comparison method, after receiving the common constant image information between the first frame of static image and the second frame of static image and the variable image information between each two adjacent frames of static images, the client can restore the second frame of static image according to the common constant image information between the first frame of static image and the second frame of static image and the common variable image information between the first frame of static image and the second frame of static image. And then, calculating a third frame of static picture according to the second frame of static picture, the variable map information between the second frame of static picture and the third frame of static picture and the corresponding relation characteristic information, thereby sequentially calculating the static pictures of all frames.
As can be seen from the above, the present invention obtains the live video image to be transmitted, where the live video image includes multiple frames of still pictures; sequentially carrying out comparison analysis on two adjacent static pictures to obtain the variable map information between the two adjacent static pictures; acquiring constant image information of two adjacent static images according to the variable image information between the two adjacent static images; acquiring relation characteristic information between each variable diagram information and the constant diagram information; sending the common constant image information between the first frame of static image and the second frame of static image in the multiple frames of static images, the variable image information between each two adjacent frames of static images and the corresponding relation characteristic information to a client; therefore, the fast transmission of the live video images is realized, and only one constant graph information, a plurality of variable graph information and relationship characteristic information need to be transmitted, so that the transmission quantity of data is greatly reduced, the live broadcast delay can be reduced, and the data transmission speed is increased.
Referring to fig. 3, fig. 3 is a block diagram of a low latency live device according to some embodiments of the present invention. The apparatus 20 comprises: a first obtaining module 21, an extracting module 22, a second obtaining module 23 and a sending module 24.
The first obtaining module 21 is configured to obtain a live video image to be transmitted, where the live video image includes multiple frames of still pictures;
the live video is collected by a high-definition camera, and a plurality of frames of static pictures are sequentially arranged according to a shooting time sequence. The live broadcasting method is mainly applied to indoor live broadcasting, for example, in a main live broadcasting performance in a current panda video and audio or fish fighting live broadcasting platform, wherein a background picture of the main live broadcasting performance is static and is not changed.
The extracting module 22 is configured to perform comparative analysis on the multiple frames of static pictures to extract common constant map information and variable map information in the multiple frames of static pictures;
with reference to fig. 4, in an embodiment, the extraction module 22 includes: a first acquisition unit 221, an extraction unit 222, and a second acquisition unit 223.
A first obtaining unit 221, configured to obtain a preset number of sequentially ordered still pictures;
an extracting unit 222, configured to perform comparative analysis on the preset number of static pictures to extract portions that are all the same in the preset number of static pictures as constant map information;
the second obtaining unit 223 is configured to subtract the constant map information from each of the preset number of still pictures to obtain a preset number of variable map information.
In one embodiment, the extraction module 22 may further include: the dividing unit 224 is configured to sequentially divide the multiple frames of still pictures into multiple still picture sets, where each still picture set includes a preset number of still pictures.
For example, the current live scene is a girl dancing in a room with a doll, and therefore, the constant graph information obtained through one time of contrastive analysis is the display graph of the room, and the variable graph information is the dynamic girl and the doll.
The second obtaining module 23 is configured to obtain relationship characteristic information between each piece of the variable map information and the constant map information.
In some embodiments, the second obtaining module 23 may be specifically configured to obtain position information and size ratio information of a constant map corresponding to each piece of the variable map information in the constant map information, and set the position information and the size ratio information as relationship characteristic information. The position information is the position of the doll and the girl in each frame of the static picture, and the size proportion information is the proportion value of the sizes of the doll and the girl to the size of the room under the condition that the doll and the girl are at the current distance from the camera.
The sending module 24 is configured to send the constant map information, each variable map information, and corresponding relationship feature information to a client, so that the client generates a corresponding live video image according to the constant map information, each variable map information, and corresponding relationship feature information. After the client acquires the constant map information, the variable map information and the corresponding relation characteristic information, the live video image can be restored according to the information.
In another embodiment, the extraction module 22 is further configured to: sequentially carrying out comparison analysis on two adjacent static pictures to obtain the variable map information between the two adjacent static pictures; acquiring constant graph information of two adjacent static pictures according to the variable graph information between the two adjacent static pictures;
the sending module 24 is further configured to send, to the client, the common constant map information between the first frame of static picture and the second frame of static picture, the variable map information between each two adjacent frames of static pictures, and the corresponding relationship characteristic information in the multiple frames of static pictures.
As can be seen from the above, the present invention obtains the live video image to be transmitted, where the live video image includes multiple frames of still pictures; carrying out comparative analysis on the multiple frames of static pictures to extract common constant map information and variable map information in the multiple frames of static pictures; acquiring relation characteristic information between each variable diagram information and the constant diagram information; sending the constant map information, each variable map information and corresponding relation characteristic information to a client, so that the client generates a corresponding live video image according to the constant map information, each variable map information and corresponding relation characteristic information; therefore, the fast transmission of live video images is realized, and only one constant graph information and a plurality of variable graph information need to be transmitted, so that the transmission quantity of data is greatly reduced, the live broadcast delay can be reduced, and the data transmission speed is increased.
An embodiment of the present application further provides a storage medium, where a computer program is stored in the storage medium, and when the computer program runs on a computer, the computer executes the low-latency live broadcasting method according to any of the above embodiments, so as to implement the following functions: acquiring a live video image to be transmitted, wherein the live video image comprises a plurality of frames of static pictures; carrying out comparative analysis on the multiple frames of static pictures to extract common constant map information and variable map information in the multiple frames of static pictures; acquiring relation characteristic information between each variable diagram information and the constant diagram information; and sending the constant graph information, the variable graph information and the corresponding relation characteristic information to a client, so that the client generates a corresponding live video image according to the constant graph information, the variable graph information and the corresponding relation characteristic information.
Referring to fig. 5, an embodiment of the present application further provides an electronic device. The electronic device can be a smart phone, a tablet computer and the like. As shown, the electronic device 300 includes a processor 301 and a memory 302. The processor 301 is electrically connected to the memory 302. The processor 301 is a control center of the terminal 300, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by running or calling a computer program stored in the memory 302 and calling data stored in the memory 302, thereby performing overall monitoring of the terminal.
In this embodiment, the processor 301 in the electronic device 300 loads instructions corresponding to one or more processes of the computer program into the memory 302 according to the following steps, and the processor 301 runs the computer program stored in the memory 302, so as to implement various functions: acquiring a live video image to be transmitted, wherein the live video image comprises a plurality of frames of static pictures; carrying out comparative analysis on the multiple frames of static pictures to extract common constant map information and variable map information in the multiple frames of static pictures; acquiring relation characteristic information between each variable diagram information and the constant diagram information; and sending the constant graph information, the variable graph information and the corresponding relation characteristic information to a client, so that the client generates a corresponding live video image according to the constant graph information, the variable graph information and the corresponding relation characteristic information.
Memory 302 may be used to store computer programs and data. The memory 302 stores computer programs containing instructions executable in the processor. The computer program may constitute various functional modules. The processor 301 executes various functional applications and data processing by calling a computer program stored in the memory 302.
It should be noted that, those skilled in the art can understand that all or part of the steps in the methods of the above embodiments can be implemented by hardware related to instructions of a program, and the program can be stored in a computer readable storage medium, which can include but is not limited to: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.
The low-delay live broadcasting method, device, storage medium and electronic device provided by the embodiments of the present application are described in detail above, and a specific example is applied in the present application to explain the principle and the implementation of the present application, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A low-latency live broadcast method, comprising the steps of:
acquiring a live video image to be transmitted, wherein the live video image comprises a plurality of frames of static pictures;
carrying out comparative analysis on the multiple frames of static pictures to extract common constant map information and variable map information in the multiple frames of static pictures;
acquiring relation characteristic information between each variable diagram information and the constant diagram information;
and sending the constant graph information, the variable graph information and the corresponding relation characteristic information to a client, so that the client generates a corresponding live video image according to the constant graph information, the variable graph information and the corresponding relation characteristic information.
2. The low-delay live broadcasting method according to claim 1, wherein the step of performing a comparative analysis on the plurality of frames of still pictures to extract constant map information and variable map information common to the plurality of frames of still pictures comprises:
acquiring a preset number of static pictures which are sequentially sequenced;
comparing and analyzing the preset number of static pictures to extract the same parts in the preset number of static pictures as constant picture information;
and subtracting the constant graph information from each static picture in the preset number of static pictures to obtain the preset number of variable graph information.
3. The low-delay live broadcasting method according to claim 2, wherein before the step of performing the comparative analysis on the plurality of frames of still pictures to extract the constant map information and the variable map information common to the plurality of frames of still pictures, the method further comprises:
and sequentially dividing the multi-frame static pictures into a plurality of static picture sets, wherein each static picture set comprises a preset number of static pictures.
4. The low-delay live broadcasting method according to claim 1, wherein the step of obtaining relationship characteristic information between each of the variable quantity graph information and the constant quantity graph information comprises:
and acquiring position information and size proportion information of the variable diagram corresponding to each variable diagram information in the constant diagram corresponding to the constant diagram information, and setting the position information and the size proportion information as relation characteristic information.
5. The low-delay live broadcasting method according to claim 1, wherein the step of performing a comparative analysis on the plurality of frames of still pictures to extract constant map information and variable map information common to the plurality of frames of still pictures comprises:
sequentially carrying out comparison analysis on two adjacent static pictures to obtain the variable map information between the two adjacent static pictures;
acquiring constant image information of two adjacent static images according to the variable image information between the two adjacent static images;
the step of sending the constant diagram information, the variable diagram information and the corresponding relationship characteristic information to a client comprises:
and sending the common constant image information between the first static image and the second static image in the multiple static images, the variable image information between every two adjacent static images and the corresponding relation characteristic information to a client.
6. A low latency live broadcast device, comprising:
the system comprises a first acquisition module, a second acquisition module and a transmission module, wherein the first acquisition module is used for acquiring a live video image to be transmitted, and the live video image comprises multiple frames of static pictures;
the extraction module is used for carrying out comparative analysis on the multiple frames of static pictures so as to extract the common constant map information and variable map information in the multiple frames of static pictures;
the second acquisition module is used for acquiring the relationship characteristic information between each variable diagram information and the constant diagram information;
and the sending module is used for sending the constant map information, the variable map information and the corresponding relation characteristic information to a client so that the client can generate a corresponding live video image according to the constant map information, the variable map information and the corresponding relation characteristic information.
7. A low-latency live broadcast device according to claim 6, wherein the extraction module comprises:
the device comprises a first acquisition unit, a second acquisition unit and a third acquisition unit, wherein the first acquisition unit is used for acquiring a preset number of static pictures which are sequentially sequenced;
the extraction unit is used for carrying out comparative analysis on the preset number of static pictures to extract the same parts in the preset number of static pictures as constant picture information;
and the second acquisition unit is used for subtracting the constant map information from each of the preset number of static pictures to obtain preset number of variable map information.
8. The low-latency live broadcast device according to claim 6, wherein the second obtaining module is configured to obtain position information and size ratio information of a variable map corresponding to each variable map information in the constant map information, and set the position information and the size ratio information as relationship characteristic information.
9. A storage medium having stored thereon a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 5.
10. An electronic device, comprising a processor and a memory, the memory having stored therein a computer program, the processor being configured to execute the method of any one of claims 1 to 5 by calling the computer program stored in the memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911103241.8A CN110856006A (en) | 2019-11-12 | 2019-11-12 | Low-delay live broadcast method and device, storage medium and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911103241.8A CN110856006A (en) | 2019-11-12 | 2019-11-12 | Low-delay live broadcast method and device, storage medium and electronic equipment |
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| CN106060080A (en) * | 2016-07-12 | 2016-10-26 | 李巍 | Medical video signal collection and transcoding system |
| CN108124194A (en) * | 2017-12-28 | 2018-06-05 | 北京奇艺世纪科技有限公司 | A kind of net cast method, apparatus and electronic equipment |
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| CN106060080A (en) * | 2016-07-12 | 2016-10-26 | 李巍 | Medical video signal collection and transcoding system |
| CN108124194A (en) * | 2017-12-28 | 2018-06-05 | 北京奇艺世纪科技有限公司 | A kind of net cast method, apparatus and electronic equipment |
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