CN107231564B - Video live broadcast method, live broadcast system and live broadcast server - Google Patents
Video live broadcast method, live broadcast system and live broadcast server Download PDFInfo
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- CN107231564B CN107231564B CN201710401546.1A CN201710401546A CN107231564B CN 107231564 B CN107231564 B CN 107231564B CN 201710401546 A CN201710401546 A CN 201710401546A CN 107231564 B CN107231564 B CN 107231564B
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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
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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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
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/234309—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440218—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4
Abstract
The application provides a video live broadcast method, a live broadcast system and a live broadcast server. The video live broadcasting method provided by the application comprises the following steps: the live broadcast server decodes the acquired first coding information sent by the anchor client equipment to obtain first original video data; the live broadcast server encodes the first original video data according to a second encoding algorithm to obtain second encoding information; the live broadcast server sends the second coding information to audience client equipment corresponding to the anchor client equipment; the compression ratio of the first coding algorithm is higher than that of the second coding algorithm, and the compatibility of the second coding algorithm is better than that of the first coding algorithm. The live broadcasting method, the live broadcasting system and the live broadcasting server can solve the problem that the received coded information cannot be normally decoded and played by audience client equipment in the existing live broadcasting system.
Description
Technical Field
The present application relates to a live broadcast technology, and in particular, to a live video broadcast method, a live broadcast system, and a live broadcast server.
Background
A live broadcast system is an internet system that broadcasts a live video stream of an anchor user to a plurality of viewer users for viewing. Live systems generally include: the system comprises anchor client equipment, a live broadcast server and audience client equipment, wherein the anchor client equipment collects live broadcast video streams of anchor users and sends the live broadcast video streams to the live broadcast server, the live broadcast server further sends the live broadcast video streams to the corresponding audience client equipment through a broadcasting or multicasting technology, and each audience client equipment receives and displays the live broadcast video streams.
Currently, live broadcasting often faces the problems of network instability and slow network speed (weak network environment). In order to reduce the requirement of live broadcast on the network, a coding algorithm with a high compression ratio is often adopted to code video data acquired by the anchor client device. However, when the video data collected by the anchor client device is encoded by using the encoding algorithm with a high compression ratio, due to the performance difference of the viewer client devices, when the viewer client device decodes and plays the received encoded information (the encoded information is obtained by encoding the video data collected by the anchor client device by using the encoding algorithm with a high compression ratio), there is a compatibility problem, and the normal decoding and playing cannot be performed.
Disclosure of Invention
In view of this, the present application provides a video live broadcasting method, a live broadcasting system, and a live broadcasting server, so as to solve the problem that, in the existing live broadcasting system, a viewer client device cannot normally decode and play received encoded information.
A first aspect of the present application provides a video live broadcasting method, which is applied to a live broadcasting system including a anchor client device, a live broadcasting server, and an audience client device corresponding to the anchor client device, and the method includes:
the live broadcast server decodes the acquired first coding information sent by the anchor client equipment to obtain first original video data, wherein the first coding information is obtained by encoding the video data acquired by the anchor client equipment according to a first coding algorithm;
the live broadcast server encodes the first original video data according to a second encoding algorithm to obtain second encoding information, wherein the compression ratio of the first encoding algorithm is higher than that of the second encoding algorithm, and the compatibility of the second encoding algorithm is better than that of the first encoding algorithm; and the live broadcast server sends the second coding information to the audience client equipment.
Further, the live system further includes a director client device associated with the anchor client device, the method further comprising:
the broadcast guide client equipment acquires the first coding information and decodes the first coding information to obtain second original video data;
the method comprises the steps that the director client equipment obtains operation information of a director user for carrying out special effect processing operation on second original video data;
and the broadcast guide client equipment sends the operation information to the live broadcast server so that the live broadcast server performs special effect processing on the first original video data according to the operation information.
Further, before the live server encodes the first original video data according to a second encoding algorithm, the method further includes:
and the live broadcast server receives the operation information sent by the director client equipment and carries out special effect processing on the first original video data according to the operation information.
Further, the encoding, by the live broadcast server, the first original video data according to a second encoding algorithm to obtain second encoding information specifically includes:
the live broadcast server determines the resolution of the first original video data, and finds out the code rate corresponding to the determined resolution from the corresponding relation between the resolution and the code rate;
and the live broadcast server adopts the second coding algorithm and codes the first original video data according to the determined resolution and the found code rate to obtain the second coding information.
Further, the method further comprises:
the director client equipment receives the resolution and the code rate input by the director user and sends the resolution and the code rate input by the director user to the live broadcast server;
correspondingly, the live broadcast server encodes the first original video data according to a second encoding algorithm to obtain second encoding information, and specifically includes:
and the live broadcast server receives the resolution and the code rate sent by the director client equipment, and codes the first original video data according to the resolution and the code rate sent by the director client by adopting the second coding algorithm to obtain second coding information.
Further, the live broadcast system further comprises a data server, wherein first coding information sent by the anchor client equipment is stored in the data server; acquiring first coding information, specifically including:
and acquiring the first coding information from a data server.
A second aspect of the present application provides a live system comprising a anchor client device, a live server and a viewer client device corresponding to the anchor client device, wherein,
the live broadcast server is used for decoding the acquired first coding information sent by the anchor client equipment to obtain first original video data, wherein the first coding information is obtained by the anchor client equipment after coding the acquired video data according to a first coding algorithm;
the live broadcast server is further configured to encode the first original video data according to a second encoding algorithm to obtain second encoding information, wherein a compression ratio of the first encoding algorithm is higher than that of the second encoding algorithm, and compatibility of the second encoding algorithm is better than that of the first encoding algorithm;
and the live broadcast server is further used for sending the second coding information to the audience client equipment.
Further, the live system also includes a director client device associated with the anchor client device, wherein,
the director client device is used for acquiring the first coding information and decoding the first coding information to obtain second original video data;
the director client device is further configured to obtain operation information of a director user performing special-effect processing operation on the second original video data;
the direct broadcasting client device is further configured to send the operation information to the live broadcasting server, so that the live broadcasting server performs special effect processing on the first original video data according to the operation information.
Further, the live broadcast server is further configured to receive the operation information sent by the director client device before encoding the first original video data according to a second encoding algorithm, and perform special effect processing on the first original video data according to the operation information.
Further, the live broadcast server is specifically configured to determine a resolution of the first original video data, find a bitrate corresponding to the determined resolution from a correspondence between the resolution and the bitrate, and encode the first original video data according to the determined resolution and the found bitrate by using the second encoding algorithm to obtain the second encoding information.
Furthermore, the director client device is further configured to receive the resolution and the code rate input by the director user, and send the resolution and the code rate input by the director user to the live broadcast server;
and the live broadcast server is further configured to receive the resolution and the code rate sent by the director client device, and encode the first original video data according to the resolution and the code rate sent by the director client device by using the second encoding algorithm to obtain the second encoding information.
A third aspect of the present application provides a video live broadcast method, where the method is applied to a live broadcast server, and the method includes:
decoding first coding information sent by anchor client equipment to obtain first original video data, wherein the first coding information is obtained by encoding video data acquired by the anchor client equipment according to a first coding algorithm;
coding the first original video data according to a second coding algorithm to obtain second coding information, wherein the compression ratio of the first coding algorithm is higher than that of the second coding algorithm, and the compatibility of the second coding algorithm is better than that of the first coding algorithm;
transmitting the second encoded information to the viewer client device.
Further, before encoding the first original video data according to the second encoding algorithm, the method further includes:
receiving operation information sent by the director client device associated with the anchor client device, and performing special effect processing on the first original video data according to the operation information; the operation information is obtained by the director client device when a director user performs special effect processing operation on second original video data, and the second original video data is obtained by the director client device decoding the obtained first coding information.
Further, the encoding the first original video data according to a second encoding algorithm to obtain second encoding information specifically includes:
determining the resolution of the first original video data, and finding out the code rate corresponding to the determined resolution from the corresponding relation between the resolution and the code rate;
and coding the first original video data by adopting the second coding algorithm according to the determined resolution and the found code rate to obtain second coding information.
Further, the encoding the first original video data according to a second encoding algorithm to obtain second encoding information specifically includes:
receiving the resolution and the code rate sent by the director client equipment, wherein the resolution and the code rate sent by the director client equipment are input into the director client equipment by a director user;
and coding the first original video data by adopting the second coding algorithm according to the resolution and the code rate sent by the director client to obtain the second coding information.
Further, acquiring the first encoding information sent by the anchor client device specifically includes:
and acquiring the first coding information from a data server, wherein the first coding information sent by the anchor client equipment is stored in the data server.
A fourth aspect of the present application provides a live server, comprising: a processing module and a sending module, wherein,
the processing module is used for decoding the acquired first coding information sent by the anchor client device to obtain first original video data, wherein the first coding information is obtained by the anchor client device coding the acquired video data according to a first coding algorithm;
the processing module is further configured to encode the original video data according to a second encoding algorithm to obtain second encoding information, where a compression ratio of the first encoding algorithm is higher than a compression ratio of the second encoding algorithm, and a compatibility of the second encoding algorithm is better than a compatibility of the first encoding algorithm;
the sending module is configured to send the second encoded information to the viewer client device.
Further, the live broadcast server further comprises: a receiving module for receiving, wherein,
the receiving module is configured to receive operation information sent by a director client device associated with a anchor client device, where the operation information is operation information of a director user performing a special effect processing operation on second original video data acquired by the director client device, and the second original video data is video data obtained by the director client device decoding the acquired first encoding information.
The processing module is further configured to perform special effect processing on the first original video data according to the operation information before the first original video data is encoded according to a second encoding algorithm.
Further, the processing module is specifically configured to determine a resolution of the first original video data, find a bitrate corresponding to the determined resolution from a correspondence between the resolution and the bitrate, and encode the first original video data according to the determined resolution and the found bitrate by using the second encoding algorithm to obtain the second encoding information.
Further, the receiving module is further configured to receive the resolution and the bitrate sent by the director client device, where the resolution and the bitrate sent by the director client device are input to the director client device by a director user;
the processing module is further configured to encode the first original video data according to the resolution and the code rate sent by the director client by using the second encoding algorithm, so as to obtain the second encoding information.
Further, the live broadcast server further comprises: an obtaining module, configured to obtain the first coding information from a data server, where the first coding information sent by the anchor client device is stored in the data server.
According to the video live broadcast method, the live broadcast system and the live broadcast server, the live broadcast server decodes the acquired first coding information sent by the anchor client device to obtain first original video data, codes the first original video data according to a second coding algorithm to obtain second coding information, and then sends the second coding information to the audience client devices corresponding to the anchor client device, wherein the compression ratio of the first coding algorithm is higher than that of the second coding algorithm, and the compatibility of the second coding algorithm is better than that of the first coding algorithm. Therefore, when the audience client equipment decodes and plays the received second coded information, the compatibility problem does not exist, and the second coded information can be normally decoded and played.
Drawings
Fig. 1 is a schematic diagram of a live system provided by an exemplary embodiment of the present application;
fig. 2 is a flowchart of a first embodiment of a video live broadcast method according to the present application;
fig. 3 is a flowchart of a second embodiment of a video live broadcast method of the present application;
fig. 4 is a schematic diagram of a live broadcast system provided in another exemplary embodiment of the present application;
fig. 5 is a flowchart of a third embodiment of a video live broadcast method according to the present application;
fig. 6 is a flowchart of a fourth embodiment of a video live broadcast method according to the present application;
fig. 7 is a flowchart of a first embodiment of a video live broadcasting method provided in the third aspect of the present application;
fig. 8 is a schematic structural diagram of a first live broadcast server according to the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The application provides a video live broadcast method, a live broadcast system and a live broadcast server, which are used for solving the problem that the received coded information cannot be normally decoded and played by audience client equipment in the existing live broadcast system.
The video live broadcasting method, the live broadcasting system and the live broadcasting server provided by the embodiment can be applied to the field of network live broadcasting, for example, can be applied to the field of outdoor live broadcasting.
The technical solutions of the present application are described in detail below with specific embodiments, which may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
Before introducing the video live broadcasting method provided by the present application, a live broadcasting system provided by the present application is briefly introduced below. Fig. 1 is a schematic diagram of a live broadcast system according to an exemplary embodiment of the present application. Referring to fig. 1, the video live broadcasting method provided by the present application is applied to the live broadcasting system shown in fig. 1, and the live broadcasting system includes a main broadcasting client device, a live broadcasting server, and an audience client device corresponding to the main broadcasting client device.
Specifically, the anchor client is installed in the anchor client device. The anchor client device may be a device with functions of acquisition, encoding, and data transmission, and may be a mobile phone, for example. And further, the live broadcast server is used for providing background service of the network live broadcast. In addition, the live broadcast server stores the corresponding relation between the anchor client and each channel, and after the audience client selects a channel, the server can send the live broadcast video stream to the audience client belonging to the same channel according to the corresponding relation between each channel and the anchor client. Further, the viewer client device is installed with a viewer client. It should be noted that the viewer client device corresponding to the anchor client device refers to a device where the viewer client belonging to the same channel as the anchor client is located.
It should be noted that, in the present application, the anchor client device and the viewer client device are located in different network environments, where the anchor client device is located in a weak network environment, for example, the anchor client device is located in an outdoor environment (network is unstable, network speed is slow).
After introducing the live broadcast system provided in an exemplary embodiment of the present application, a video live broadcast method provided in this embodiment is described in detail below.
Fig. 2 is a flowchart of a first embodiment of a video live broadcast method according to the present application. The embodiment relates to a specific process of video live broadcast. The main execution body of the present embodiment is the live system shown in fig. 1. Referring to fig. 2, the method provided in this embodiment may include the following steps:
s101, a live broadcast server decodes acquired first coding information sent by anchor client equipment to acquire first original video data, wherein the first coding information is acquired by encoding the video data acquired by the anchor client equipment according to a first coding algorithm.
In conjunction with the above description, the anchor client device will capture video data of the anchor user during live broadcast. In addition, after the anchor client device acquires the video data of the anchor user, the first coding algorithm is adopted, and the acquired video data is coded according to the resolution and the code rate selected by the anchor user, so as to obtain first coding information (for example, the resolution selected by the anchor user is 1080P, and the code rate is 1.5Mbit/s, at this time, the anchor client device adopts the first coding algorithm, and codes the acquired video data according to the resolution of 1080P and the code rate of 1.5Mbit/s, so as to obtain the first coding information). After the first coding information is obtained, the anchor client equipment sends the first coding information out; correspondingly, the live broadcast server can acquire first coding information sent by the anchor client equipment. When the live broadcast service acquires first coding information sent by the anchor client device, in the step, the live broadcast server decodes the acquired first coding information to acquire first original video data.
It should be noted that, referring to the description in the background art, in order to reduce the requirement of the live broadcast on the network, the first encoding algorithm is an encoding algorithm with a high compression ratio. The first encoding algorithm is described below as an example of the H265 encoding algorithm.
And S102, the live broadcast server encodes the first original video data according to a second encoding algorithm to obtain second encoding information, wherein the compression ratio of the first encoding algorithm is higher than that of the second encoding algorithm, and the compatibility of the second encoding algorithm is better than that of the first encoding algorithm. In particular, the compatibility of the second encoding algorithm is better than the compatibility of the first encoding algorithm, indicating that the viewer client device has higher support for the second encoding algorithm than the viewer client has for the first encoding algorithm. Namely, when the audience client equipment decodes and plays the coded information coded by the second coding algorithm, the compatibility problem does not exist, and the coded information can be normally decoded and played. Alternatively, the second encoding algorithm may be any one of an H264 encoding algorithm, an H263 encoding algorithm, an H262 encoding algorithm, and an H261 encoding algorithm. The second encoding algorithm is described below as an example of the H264 encoding algorithm. In this step, the first original video data is encoded according to the H264 encoding algorithm to obtain the second encoding information. It should be noted that, in this embodiment, when the first original video data is encoded according to the second encoding algorithm, the resolution and the code rate during encoding may be default values.
And S103, the live broadcast server sends the second coding information to the audience client equipment.
Specifically, after the second encoded information is obtained in step S102, in this step, the live broadcast server sends the second encoded information to the viewer client device, and accordingly, the viewer client device decodes and plays the second encoded information when receiving the second encoded information. It should be noted that, because the second encoding algorithm has better compatibility than the first encoding algorithm, when the spectator client device decodes and plays the received second encoded information, the compatibility problem does not exist, and the decoding and playing can be performed normally.
In this embodiment, when the live broadcast server acquires the first encoding information sent by the anchor client device, the first encoding information is not directly sent to the viewer client device corresponding to the anchor client device, but the first encoding information is decoded to obtain first original video data, the first original video data is encoded according to a second encoding algorithm to obtain second encoding information, and the second encoding information is sent to the viewer client device corresponding to the anchor client device, where the compatibility of the second encoding algorithm is better than the compatibility of the first encoding algorithm. Therefore, when the audience client equipment decodes and plays the received second coded information, the compatibility problem does not exist, and the second coded information can be normally decoded and played.
In the video live broadcasting method provided by this embodiment, the live broadcasting server decodes the acquired first encoding information sent by the anchor client device to obtain first original video data, encodes the first original video data according to a second encoding algorithm to obtain second encoding information, and further sends the second encoding information to the audience client devices corresponding to the anchor client device, where a compression ratio of the first encoding algorithm is higher than a compression ratio of the second encoding algorithm, and a compatibility of the second encoding algorithm is better than a compatibility of the first encoding algorithm. Therefore, when the audience client equipment decodes and plays the received second coded information, the compatibility problem does not exist, and the second coded information can be normally decoded and played.
Fig. 3 is a flowchart of a second embodiment of a video live broadcast method according to the present application. The method provided by the embodiment is applied to the live broadcast system shown in fig. 1. The embodiment relates to a specific process of encoding first original video data by a live broadcast server according to a second encoding algorithm. Referring to fig. 3, on the basis of the foregoing embodiment, in the method provided in this embodiment, step S102 specifically includes:
s201, the live broadcast server determines the resolution of the first original video data, and finds out the code rate corresponding to the determined resolution from the corresponding relation between the resolution and the code rate.
Specifically, the resolution of the first original video data may be determined according to the number of pixels included in the first original video data. In connection with the above example, when the anchor client device encodes the captured video data according to the first encoding algorithm, the resolution is 1080P, and therefore, at this time, the resolution of the first original video data is determined to be 1080P.
It should be noted that the correspondence between the resolution and the code rate is set according to actual needs (when encoding is performed with the corresponding resolution and code rate, distortion can be reduced), and in this embodiment, the correspondence between the resolution and the code rate is not limited. For example, in one embodiment, when the determined resolution is 1080P, the bitrate corresponding to the determined resolution (1080P) is 3Mbit/s, which is found from the correspondence between the resolution and the bitrate.
And S202, the live broadcast server encodes the first original video data by adopting the second encoding algorithm according to the determined resolution and the found code rate to obtain the second encoding information.
Specifically, when the resolution of the first original video data is determined in step S201, and the code rate corresponding to the determined resolution is found from the correspondence between the resolution and the code rate, in this step, the first original video data is encoded by using the second encoding algorithm according to the determined resolution and the found code rate, so as to obtain the second encoding information. With reference to the above example, that is, the first original video data is encoded by using the H264 coding algorithm according to the resolution of 1080P and the code rate of 3Mbit/s, so as to obtain the second encoded information.
In the video live broadcast method provided by this embodiment, when the live broadcast server encodes the first original video data according to the second encoding algorithm, the live broadcast server determines the resolution of the first original video data and finds the code rate corresponding to the determined resolution from the correspondence between the resolution and the code rate, and then encodes the first original video data according to the determined resolution and the found code rate by using the second encoding algorithm to obtain the second encoding information. In this way, distortion may be reduced.
Fig. 4 is a schematic diagram of a live broadcast system according to another exemplary embodiment of the present application. Referring to fig. 4, based on the live broadcasting system shown in fig. 1, the live broadcasting system provided in this embodiment further includes: a data server and a director client device associated with the anchor client device.
Wherein the data server is a server dedicated to storing the first encoded information transmitted by the anchor client device. Specifically, in the live broadcast process, the anchor client device sends the first coding information to the data server, and the live broadcast server obtains the first coding information from the data server. It should be noted that, in a specific implementation, when the data server receives the first coding information sent by the anchor client device, broadcast information (the broadcast information is used to indicate that it receives the first coding information sent by the anchor client device) is sent, and when the live broadcast server receives the broadcast message, the first coding information is obtained from the data server.
Further, the director client device may be a device with higher data processing capabilities, e.g., a computer on which the director client is installed. Further, the director user may utilize the director client device to perform special effects processing operations on the video data.
After the live broadcasting system provided by the embodiment is introduced, the method provided by the embodiment is described in detail below. Fig. 5 is a flowchart of a third embodiment of a video live broadcast method according to the present application. The embodiment relates to a specific process for performing special effect processing on first original video data. Referring to fig. 5, the method provided in this embodiment may include:
s301, the director client device obtains the first coding information and decodes the first coding information to obtain second original video data.
Specifically, in this step, the director client device may obtain the first pass code information from the data server. Specifically, when the data server receives the first coding information sent by the anchor client device, the broadcast information is sent, and when the director client device receives the broadcast message, the first coding information is obtained from the data server.
And S302, the director client device acquires operation information of the director user performing special effect processing operation on the second original video data.
It should be noted that the director client has an editing interface, and the director user can perform special effect processing operation on the second original video data based on the editing interface. Specifically, the special effect processing operation may include special effect processing operations such as adding subtitles, adding pictures, adding audio, adding animation, and the like. Correspondingly, when the special effect processing operation is a caption special effect processing operation, the corresponding operation information includes the text content of the caption, the font size, the font color, the font type, and the added position information (i.e., which position of the video data the caption is added to); for another example, when the special effect processing operation is a picture adding special effect processing operation, the operation information includes identification information of a picture (i.e., which picture is added) and added position information; for another example, when the special effect processing operation is audio-added special effect processing, the operation information may include identification information of audio and time information of addition (i.e., to which time period the audio is added).
And S302, the director client device sends the operation information to the live broadcast server, so that the live broadcast server performs special effect processing on the first original video data according to the operation information.
Specifically, when operation information of the director user performing special-effect data operation on the second original video data is acquired in step S301, the operation information is sent to the live broadcast server in this step. It should be noted that the live server stores an accessory corresponding to the director client device (that is, the live server stores the same picture, audio, and animation as the director client device). Therefore, after the live broadcast server receives the operation information, the first original video data can be subjected to corresponding special effect processing according to the operation information.
And S303, the live broadcast server receives the operation information sent by the director client device, and performs special effect processing on the first original video data according to the operation information.
Specifically, for example, the special effect processing operation is a special effect processing operation for adding a picture, and the operation information is: the identification information of the picture and the added position information (e.g., the operation information is picture 1, and the added position information is position a). In this step, after receiving the operation information, the live broadcast server obtains the picture 1 from the local, and adds the picture 1 to the position a in the first video data.
In the method provided by this embodiment, the director client device obtains the second original video data by obtaining the first encoding information and decoding the first encoding information, and further obtains the operation information of the director user performing the special-effect processing operation on the second original video data, and sends the operation information to the live broadcast server. Therefore, the live broadcast server can carry out the same special effect processing on the first original video data according to the operation information of the second video data carried out the special effect processing operation by the director user, so as to further enrich the content of the first original video data and improve the interest of live broadcast.
Optionally, when the live system includes a director client device, the video live method provided in this embodiment may further include:
the method comprises the steps that the director client equipment receives the resolution and the code rate input by a director user and sends the resolution and the code rate input by the director user to a live broadcast server;
correspondingly, the live broadcast server encodes the first original video data according to a second encoding algorithm to obtain second encoding information, and specifically includes:
and the live broadcast server receives the resolution and the code rate sent by the director client equipment, and codes the first original video data according to the resolution and the code rate sent by the director client by adopting the second coding algorithm to obtain second coding information.
Specifically, during broadcasting, the director user can input a resolution and a code rate to the director client device according to actual needs, and then the director client device sends the resolution and the code rate to the live broadcast server, so that the live broadcast server encodes the first original video data according to the resolution and the code rate. After broadcasting, in the process of live broadcasting, a broadcast guide user can enter a viewer client, the resolution and the code rate of the live broadcasting server during coding are determined based on a live broadcasting picture displayed by viewer client equipment, the determined resolution and the determined code rate are input into the broadcast guide client equipment, and the resolution and the code rate are sent to the live broadcasting server through the broadcast guide client equipment, so that the live broadcasting server codes first original video data according to the resolution and the code rate. Therefore, the resolution and the code rate during coding can be adjusted in real time, and the quality of live broadcasting is ensured (picture quality and fluency can be ensured at the same time). For example, in one embodiment, after the start of the broadcast, the director enters the viewer's client and finds that the current live view is more calmer. At this time, the director user sets the resolution to be smaller, for example, the resolution is set to be 720P, after the resolution is set, the bitrate is determined according to the corresponding relationship between the resolution and the bitrate, then the determined resolution and bitrate are input to the director client device, and the director client device sends the resolution and bitrate to the live broadcast server, so that the live broadcast server encodes the first original video data according to the resolution and bitrate.
In the method provided by this embodiment, the director client device receives the resolution and the code rate input by the director user and sends the resolution and the code rate input by the director user to the live broadcast server, and the live broadcast server further encodes the first original data according to the resolution and the code rate sent by the director client device when receiving the resolution and the code rate sent by the director client device. Therefore, the resolution and the code rate of the live broadcast server during encoding can be flexibly controlled based on the resolution and the code rate input by the director user, and the live broadcast quality is improved.
Fig. 6 is a flowchart of a fourth embodiment of a video live broadcast method according to the present application. Referring to fig. 6, the method provided in this embodiment may include the following steps:
s401, the anchor client device encodes the collected video data according to a first encoding algorithm to obtain first encoding information.
S402, the anchor client device sends the first coding information to a data server.
And S403, the live broadcast server acquires the first coding information from the data server.
S404, the live broadcast server decodes the first coding information to obtain first original video data.
S405, the director client device obtains the first coding information from the data server.
S406, the director client device decodes the first coding information to obtain second original video data.
And S407, the director client device acquires operation information of the director user performing special effect processing operation on the second original video data.
And S408, the director client device sends the operation information to a live broadcast server.
And S409, the live broadcast server performs special effect processing on the first original video data according to the operation information.
S410, the live broadcast server codes the first original video data after the special effect processing according to a second coding algorithm to obtain second coding information.
And S411, the live broadcast server sends the second coding information to the audience client.
Specifically, for the specific implementation process and implementation principle of each step, reference may be made to the description in the above embodiments, and details are not described here.
In the video live broadcasting method provided by this embodiment, the live broadcasting server obtains first original video data by decoding the obtained first encoding information, and encodes the first original video data according to a second encoding algorithm to obtain second encoding information, where a compression ratio of the first encoding algorithm is higher than a compression ratio of the second encoding algorithm, and a compatibility of the second encoding algorithm is better than a compatibility of the first encoding algorithm. Therefore, when the audience client equipment decodes and plays the received second coded information, the compatibility problem does not exist, and the decoding and playing can be normally carried out. In addition, according to the method provided by this embodiment, the director client device obtains the second original video data by obtaining the first encoding information and decoding the first encoding information, and further obtains the operation information of the director user performing the special effect processing operation on the second original video data, and sends the operation information to the live broadcast server, so that the live broadcast server performs the special effect processing on the first original video data according to the operation information before encoding the first original video data, and thus, the content of the first original video data can be enriched, and the interest of live broadcast is improved.
A second aspect of the present application provides a live broadcast system, which can be implemented by software, hardware, and a combination of software and hardware. Fig. 1 is a schematic diagram of a live broadcast system according to an exemplary embodiment of the present application. Referring to fig. 1, the live broadcasting system provided in this embodiment includes: a anchor client device, a live server, and a viewer client device corresponding to the anchor client device, wherein,
the live broadcast server is used for decoding the acquired first coding information sent by the anchor client equipment to obtain first original video data, wherein the first coding information is obtained by the anchor client equipment after coding the acquired video data according to a first coding algorithm;
the live broadcast server is further configured to encode the first original video data according to a second encoding algorithm to obtain second encoding information, wherein a compression ratio of the first encoding algorithm is higher than that of the second encoding algorithm, and compatibility of the second encoding algorithm is better than that of the first encoding algorithm; and the live broadcast server is further used for sending the second coding information to the audience client equipment.
The live broadcast system provided in this embodiment may be used to execute the technical solution of the method embodiment shown in fig. 2, and the implementation principle and the technical effect are similar, which are not described herein again.
Further, the live broadcast server is specifically configured to determine a resolution of the first original video data, find a bitrate corresponding to the determined resolution from a correspondence between the resolution and the bitrate, and encode the first original video data according to the determined resolution and the found bitrate by using the second encoding algorithm to obtain the second encoding information.
The live broadcast system provided in this embodiment may be used to execute the technical solution of the method embodiment shown in fig. 3, and the implementation principle and the technical effect are similar, which are not described herein again.
Further, fig. 4 is a schematic diagram of a live broadcast system provided in another exemplary embodiment of the present application. Referring to fig. 4, the live broadcasting system provided in this embodiment further includes: a director client device associated with the anchor client device, wherein,
the director client device is used for acquiring the first coding information and decoding the first coding information to obtain second original video data;
the director client device is further configured to obtain operation information of a director user performing special-effect processing operation on the second original video data;
the direct broadcasting client device is further configured to send the operation information to the live broadcasting server, so that the live broadcasting server performs special effect processing on the first original video data according to the operation information.
Further, the live broadcast server is further configured to receive the operation information sent by the director client device before encoding the first original video data according to a second encoding algorithm, and perform special effect processing on the first original video data according to the operation information.
The live broadcast system provided in this embodiment may be used to execute the technical solution of the method embodiment shown in fig. 5, and the implementation principle and the technical effect are similar, which are not described herein again.
Furthermore, the director client device is further configured to receive the resolution and the code rate input by the director user, and send the resolution and the code rate input by the director user to the live broadcast server;
and the live broadcast server is further configured to receive the resolution and the code rate sent by the director client device, and encode the first original video data according to the resolution and the code rate sent by the director client device by using the second encoding algorithm to obtain the second encoding information.
The third aspect of the present application further provides a video live broadcasting method. The execution subject of the method is a live broadcast server. Fig. 7 is a flowchart of a first embodiment of a video live broadcasting method according to a third aspect of the present application, and referring to fig. 7, the video live broadcasting method according to the present embodiment may include the following steps:
s501, decoding first coding information sent by the anchor client device to obtain first original video data, wherein the first coding information is obtained by the anchor client device coding the collected video data according to a first coding algorithm.
S502, encoding the first original video data according to a second encoding algorithm to obtain second encoded information, wherein a compression ratio of the first encoding algorithm is higher than a compression ratio of the second encoding algorithm, and a compatibility of the second encoding algorithm is better than a compatibility of the first encoding algorithm.
S503, transmitting the second encoded information to the viewer client device.
Specifically, the specific implementation process and implementation principle of each step above may refer to the foregoing description, and are not described herein again.
In the method provided by this embodiment, the live broadcast server decodes the acquired first encoding information sent by the anchor client device to obtain first original video data, encodes the first original video data according to a second encoding algorithm to obtain second encoding information, and further sends the second encoding information to the viewer client device corresponding to the anchor client device, where a compression ratio of the first encoding algorithm is higher than a compression ratio of the second encoding algorithm, and a compatibility of the second encoding algorithm is better than a compatibility of the first encoding algorithm. Therefore, when the audience client equipment decodes and plays the received second coded information, the compatibility problem does not exist, and the second coded information can be normally decoded and played.
Further, before encoding the first original video data according to the second encoding algorithm, the method further includes:
receiving operation information sent by the director client device associated with the anchor client device, and performing special effect processing on the first original video data according to the operation information; the operation information is obtained by the director client device when a director user performs special effect processing operation on second original video data, and the second original video data is obtained by the director client device decoding the obtained first coding information.
Further, the encoding the first original video data according to a second encoding algorithm to obtain second encoding information specifically includes:
determining the resolution of the first original video data, and finding out the code rate corresponding to the determined resolution from the corresponding relation between the resolution and the code rate;
and coding the first original video data by adopting the second coding algorithm according to the determined resolution and the found code rate to obtain second coding information.
Further, the encoding the first original video data according to a second encoding algorithm to obtain second encoding information specifically includes:
receiving the resolution and the code rate sent by the director client equipment, wherein the resolution and the code rate sent by the director client equipment are input into the director client equipment by a director user;
and coding the first original video data by adopting the second coding algorithm according to the resolution and the code rate sent by the director client to obtain the second coding information.
Further, acquiring the first encoding information sent by the anchor client device specifically includes:
and acquiring the first coding information from a data server, wherein the first coding information sent by the anchor client equipment is stored in the data server.
Fig. 8 is a schematic structural diagram of a first live broadcast server according to the present application. The live broadcast server can be realized by software, hardware and a combination of software and hardware. Referring to fig. 8, the live broadcast server provided in this embodiment includes: a processing module 100 and a sending module 200, wherein,
the processing module 100 is configured to decode first encoding information sent by anchor client equipment to obtain first original video data, where the first encoding information is obtained by encoding video data acquired by the anchor client equipment according to a first encoding algorithm;
the processing module 100 is further configured to encode the original video data according to a second encoding algorithm to obtain second encoding information, where a compression ratio of the first encoding algorithm is higher than a compression ratio of the second encoding algorithm, and a compatibility of the second encoding algorithm is better than a compatibility of the first encoding algorithm;
the sending module 200 is configured to send the second encoded information to the viewer client device.
The live broadcast server provided in this embodiment may be configured to execute the technical solution of the method embodiment shown in fig. 6, and the implementation principle and the technical effect are similar, which are not described herein again.
Further, referring to fig. 8, the live broadcast server further includes: the receiving module 300 is configured to, among other things,
the receiving module 300 is configured to receive operation information sent by a director client device associated with a anchor client device, where the operation information is operation information of a director user performing a special effect processing operation on second original video data acquired by the director client device, and the second original video data is video data obtained by the director client device decoding the acquired first encoding information.
The processing module 100 is further configured to perform special effect processing on the first original video data according to the operation information before the first original video data is encoded according to a second encoding algorithm.
Further, the processing module 100 is specifically configured to determine a resolution of the first original video data, find a bitrate corresponding to the determined resolution from a correspondence between the resolution and the bitrate, and encode the first original video data according to the determined resolution and the found bitrate by using the second encoding algorithm to obtain the second encoding information.
Further, the receiving module 300 is further configured to receive the resolution and the bitrate sent by the director client device, where the resolution and the bitrate sent by the director client device are input to the director client device by a director user;
the processing module 100 is further configured to encode the first original video data according to the resolution and the code rate sent by the director client by using the second encoding algorithm, so as to obtain the second encoding information.
Further, the live broadcast server further comprises: an obtaining module 400, where the obtaining module 400 is configured to obtain the first encoding information from a data server, where the first encoding information sent by the anchor client device is stored in the data server.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A video live broadcast method is applied to a live broadcast system, the live broadcast system comprises a main broadcast client device, a live broadcast server and audience client devices corresponding to the main broadcast client device, and the method comprises the following steps:
the live broadcast server decodes the acquired first coding information sent by the anchor client equipment to obtain first original video data, wherein the first coding information is obtained by encoding the video data acquired by the anchor client equipment according to a first coding algorithm;
the live broadcast server encodes the first original video data according to a second encoding algorithm to obtain second encoding information, wherein the compression ratio of the first encoding algorithm is higher than that of the second encoding algorithm, and the compatibility of the second encoding algorithm is better than that of the first encoding algorithm;
and the live broadcast server sends the second coding information to the audience client equipment.
2. The method of claim 1, wherein the live system further comprises a director client device associated with the anchor client device, the method further comprising:
the broadcast guide client equipment acquires the first coding information and decodes the first coding information to obtain second original video data;
the method comprises the steps that the director client equipment obtains operation information of a director user for carrying out special effect processing operation on second original video data;
and the broadcast guide client equipment sends the operation information to the live broadcast server so that the live broadcast server performs special effect processing on the first original video data according to the operation information.
3. The method of claim 2, wherein prior to the live server encoding the first raw video data in accordance with the second encoding algorithm, the method further comprises:
and the live broadcast server receives the operation information sent by the director client equipment and carries out special effect processing on the first original video data according to the operation information.
4. The method according to claim 1, wherein the live server encodes the first original video data according to a second encoding algorithm to obtain second encoding information, and specifically includes:
the live broadcast server determines the resolution of the first original video data, and finds out the code rate corresponding to the determined resolution from the corresponding relation between the resolution and the code rate;
and the live broadcast server adopts the second coding algorithm and codes the first original video data according to the determined resolution and the found code rate to obtain the second coding information.
5. The method of claim 2, further comprising:
the director client equipment receives the resolution and the code rate input by the director user and sends the resolution and the code rate input by the director user to the live broadcast server;
correspondingly, the live broadcast server encodes the first original video data according to a second encoding algorithm to obtain second encoding information, and specifically includes:
and the live broadcast server receives the resolution and the code rate sent by the director client equipment, and codes the first original video data according to the resolution and the code rate sent by the director client by adopting the second coding algorithm to obtain second coding information.
6. The method of any of claims 1-5, wherein the live system further comprises a data server having stored therein the first encoded information sent by the anchor client device; acquiring first coding information, specifically including:
and acquiring the first coding information from a data server.
7. A live system comprising a anchor client device, a live server, and a viewer client device corresponding to the anchor client device, wherein,
the live broadcast server is used for decoding the acquired first coding information sent by the anchor client equipment to obtain first original video data, wherein the first coding information is obtained by the anchor client equipment after coding the acquired video data according to a first coding algorithm;
the live broadcast server is further configured to encode the first original video data according to a second encoding algorithm to obtain second encoding information, wherein a compression ratio of the first encoding algorithm is higher than that of the second encoding algorithm, and compatibility of the second encoding algorithm is better than that of the first encoding algorithm;
and the live broadcast server is further used for sending the second coding information to the audience client equipment.
8. The live system of claim 7, further comprising a director client device associated with the anchor client device, wherein,
the director client device is used for acquiring the first coding information and decoding the first coding information to obtain second original video data;
the director client device is further configured to obtain operation information of a director user performing special-effect processing operation on the second original video data;
the direct broadcasting client device is further configured to send the operation information to the live broadcasting server, so that the live broadcasting server performs special effect processing on the first original video data according to the operation information.
9. A video live broadcast method is applied to a live broadcast server and comprises the following steps:
decoding first coding information sent by anchor client equipment to obtain first original video data, wherein the first coding information is obtained by encoding video data acquired by the anchor client equipment according to a first coding algorithm;
coding the first original video data according to a second coding algorithm to obtain second coding information, wherein the compression ratio of the first coding algorithm is higher than that of the second coding algorithm, and the compatibility of the second coding algorithm is better than that of the first coding algorithm;
transmitting the second encoded information to a viewer client device.
10. A live server, comprising: a processing module and a sending module, wherein,
the processing module is used for decoding the acquired first coding information sent by the anchor client device to obtain first original video data, wherein the first coding information is obtained by the anchor client device coding the acquired video data according to a first coding algorithm;
the processing module is further configured to encode the original video data according to a second encoding algorithm to obtain second encoding information, where a compression ratio of the first encoding algorithm is higher than a compression ratio of the second encoding algorithm, and a compatibility of the second encoding algorithm is better than a compatibility of the first encoding algorithm;
the sending module is used for sending the second coding information to the client equipment of the audience.
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| CN109788314B (en) * | 2018-12-18 | 2021-05-11 | 视联动力信息技术股份有限公司 | Method and device for transmitting video stream data |
| CN113411647A (en) * | 2021-04-20 | 2021-09-17 | 北京国际云转播科技有限公司 | Cloud director method, system, server and computer readable storage medium |
| CN113411640A (en) * | 2021-04-21 | 2021-09-17 | 北京国际云转播科技有限公司 | Video encoder, cloud relay method, server, system and storage medium |
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Effective date of registration: 20210108 Address after: 511442 3108, 79 Wanbo 2nd Road, Nancun Town, Panyu District, Guangzhou City, Guangdong Province Patentee after: GUANGZHOU CUBESILI INFORMATION TECHNOLOGY Co.,Ltd. Address before: 511442 24 floors, B-1 Building, Wanda Commercial Square North District, Wanbo Business District, 79 Wanbo Second Road, Nancun Town, Panyu District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU HUADUO NETWORK TECHNOLOGY Co.,Ltd. |