CN115767149A - Video data transmission method and device - Google Patents

Abstract

The invention discloses a video data transmission method and device, and relates to the technical field of computers. One embodiment of the method comprises: monitoring the network condition of the client in real time, and determining the current network state level of the client based on the network condition; under the condition that the current network state level is different from the original network state level, acquiring a coding parameter corresponding to the current network state level; and coding the video data to be transmitted according to the coding parameters and transmitting the coded video data to the client. According to the embodiment, in the video coding stage, the coding parameters can be adjusted in real time according to the network state, the video blocking condition is reduced, the instant refreshing of the video is ensured, the video delay is reduced, the real-time performance of video data transmission is improved, meanwhile, the quality compensation is carried out on the video data, the video quality can be ensured, and the use experience of a user is improved.

Description

A video data transmission method and device

technical field

The invention relates to the field of computer technology, in particular to a video data transmission method and device.

Background technique

Video data needs to be transmitted in real time in scenarios such as video conferencing and live broadcasting. When the network status is poor, video freezes are prone to occur. At present, the solution to reduce video freeze when transmitting video data is to adjust the network bandwidth allocation of the client and reduce the video quality after decoding and rendering, that is, to adjust the video transmission process and decoding process.

In the course of realizing the present invention, the inventor finds that there are at least the following problems in the prior art:

The problem of video freeze is solved by adjusting the network bandwidth allocation of the client and reducing the video quality after decoding and rendering. The real-time performance of video data transmission is poor, and the video quality cannot be guaranteed while reducing video freeze, and the user experience is poor.

Contents of the invention

In view of this, the embodiment of the present invention provides a video data transmission method and device, which can adjust the encoding parameters in real time according to the network status during the video encoding stage, reduce video freeze, ensure instant video refresh, and reduce video delay , improve the real-time performance of video data transmission, and at the same time, by performing quality compensation on video data, video quality can be guaranteed and user experience can be improved.

To achieve the above purpose, according to an aspect of the embodiments of the present invention, a video data transmission method is provided.

A method for transmitting video data, comprising: monitoring the network condition of a client in real time, determining the current network status level of the client based on the network condition; when the current network status level is different from the original network status level, obtaining Encoding parameters corresponding to the current network state level; encoding the video data to be transmitted according to the encoding parameters and transmitting the encoded video data to the client.

Optionally, the network condition includes a network packet loss rate, and the real-time monitoring of the network condition of the client, and determining the current network status level of the client based on the network condition include: monitoring the network packet loss rate of the client in real time ; Determine the current network status level of the client according to the preset network packet loss rate range of each network status level and the network packet loss rate.

Optionally, the encoding parameters include the number of video frames between two key frames, and encoding the video data to be transmitted according to the encoding parameters and transmitting the encoded video data to the client includes: according to The number of video frames between two key frames corresponding to the current network status level, encoding the video data to be transmitted and transmitting the encoded video data to the client.

Optionally, the encoding parameters further include frame types of video frames, and encoding the video data to be transmitted according to the encoding parameters and transmitting the encoded video data to the client includes: transmitting the video data to be transmitted Modifying the frame type of the current video frame of the video data to an instant refresh frame; encoding the video data to be transmitted according to the instant refresh frame, and transmitting the encoded video data to the client.

Optionally, the encoding parameters further include a video code rate, and encoding the video data to be transmitted according to the encoding parameters and transmitting the encoded video data to the client includes: encoding the video data according to the video code rate The video data to be transmitted is encoded, and the encoded video data is transmitted to the client.

Optionally, before transmitting the encoded video data to the client, it further includes: acquiring a quality compensation parameter corresponding to the current network status level; Quality compensation is performed on video frames between the next adjacent instant refresh frame and the instant refresh frame.

Optionally, performing quality compensation on video frames between the next instant refresh frame adjacent to the instant refresh frame and the instant refresh frame includes: Frame and the specified number of video frames before the next instant refresh frame are used as video frames to be compensated; according to the quality compensation parameters, according to the order of the video frames to be compensated, the quantization of each video frame to be compensated is sequentially adjusted parameters to perform quality compensation on the video frame to be compensated.

Optionally, according to the order of the network state levels from high to low, the number of video frames between the two key frames decreases sequentially, and the video bit rate decreases sequentially.

According to another aspect of the embodiments of the present invention, a device for transmitting video data is provided.

A video data transmission device, comprising: a current network state level determination module, configured to monitor the network conditions of a client in real time, and determine the current network state level of the client based on the network conditions; an encoding parameter acquisition module, configured to In the case where the current network state level is different from the original network state level, obtain the encoding parameters corresponding to the current network state level; the video data transmission module is used to encode the video data to be transmitted according to the encoding parameters and encode the encoded Video data is transmitted to the client.

Optionally, the network condition includes a network packet loss rate, and the current network state level determination module is also used for: monitoring the network packet loss rate of the client in real time; according to the network packet loss rate of each preset network state level Range and the network packet loss rate determine the client's current network status level.

Optionally, the encoding parameters include the number of video frames between two key frames, and the video data transmission module is further configured to: according to the number of video frames between two key frames corresponding to the current network state level, Encoding the video data to be transmitted and transmitting the encoded video data to the client.

Optionally, the encoding parameters further include the frame type of the video frame, and the video data transmission module is further configured to: modify the frame type of the current video frame of the video data to be transmitted to an instant refresh frame; The refresh frame codes the video data to be transmitted and transmits the coded video data to the client.

Optionally, the encoding parameters further include a video bit rate, and the video data transmission module is further configured to: encode the video data to be transmitted according to the video bit rate, and transmit the encoded video data to the client.

Optionally, it also includes a quality compensation module, configured to: acquire a quality compensation parameter corresponding to the current network state level; Quality compensation is performed on the video frames between the instant refresh frames mentioned above.

Optionally, the quality compensation module is further configured to: use a specified number of video frames after the instant refresh frame and a specified number of video frames before the next instant refresh frame as video frames to be compensated; according to the The quality compensation parameter is to sequentially adjust the quantization parameters of each video frame to be compensated according to the order of the video frames to be compensated, so as to perform quality compensation on the video frames to be compensated.

Optionally, according to the order of the network state levels from high to low, the number of video frames between the two key frames decreases sequentially, and the video bit rate decreases sequentially.

According to yet another aspect of the embodiments of the present invention, an electronic device is provided.

An electronic device, comprising: one or more processors; a memory for storing one or more programs, when the one or more programs are executed by the one or more processors, the one or more Multiple processors implement the video data transmission method provided by the embodiment of the present invention.

According to yet another aspect of the embodiments of the present invention, a computer-readable medium is provided.

A computer-readable medium, on which a computer program is stored, and when the computer program is executed by a processor, the video data transmission method provided by the embodiment of the present invention is realized.

An embodiment of the above invention has the following advantages or beneficial effects: by monitoring the network situation of the client in real time, the current network status level of the client is determined based on the network situation; when the current network status level is different from the original network status level, the current The encoding parameters corresponding to the network status level; the technical solution of encoding the video data to be transmitted according to the encoding parameters and transmitting the encoded video data to the client can adjust the encoding parameters in real time according to the network status during the video encoding stage to reduce video freeze It ensures instant video refresh, reduces video delay, and improves the real-time performance of video data transmission. At the same time, through quality compensation for video data, video quality can be guaranteed and user experience can be improved.

The further effects of the above-mentioned non-conventional alternatives will be described below in conjunction with specific embodiments.

Description of drawings

The accompanying drawings are used to better understand the present invention, and do not constitute improper limitations to the present invention. in:

Fig. 1 is a schematic diagram of main steps of a transmission method of video data according to an embodiment of the present invention;

FIG. 2 is a schematic flow diagram of a video data transmission method according to an embodiment of the present invention;

3 is a schematic diagram of main modules of a video data transmission device according to an embodiment of the present invention;

FIG. 4 is an exemplary system architecture diagram to which an embodiment of the present invention can be applied;

Fig. 5 is a schematic structural diagram of a computer system suitable for implementing a terminal device or a server according to an embodiment of the present invention.

Detailed ways

Exemplary embodiments of the present invention are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present invention to facilitate understanding, and they should be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

Fig. 1 is a schematic diagram of main steps of a video data transmission method according to an embodiment of the present invention.

As shown in FIG. 1 , a video data transmission method according to an embodiment of the present invention mainly includes the following steps S101 to S103.

Step S101: Monitor the network conditions of the client in real time, and determine the current network status level of the client based on the network conditions. Wherein, the network condition may include a network packet loss rate.

In one embodiment, monitoring the network condition of the client in real time, and determining the current network status level of the client based on the network condition may include: monitoring the network packet loss rate of the client in real time; and network packet loss rate determine the client's current network status level.

Specifically, the number of network status levels and the threshold of network packet loss rate can be set based on experience. For example, the network status level can be divided into three levels: high network status level, medium network status level, and low network status level. For example, the network packet loss rate The threshold can be set to 5% or 45%. The network packet loss rate of the client can be obtained through real-time monitoring. If the network packet loss rate is less than 5%, the current network status level is a high network status level. If the network packet loss rate is greater than or equal to 5 %, and less than or equal to 45%, the current network status level is medium network status level, if the network packet loss rate is greater than 45%, the current network status level is low network status level.

Step S102: If the current network state level is different from the original network state level, obtain the encoding parameters corresponding to the current network state level. Wherein, the encoding parameter may include the number of video frames between two key frames, may also include the frame type of the video frame, and may also include the video code rate.

In one embodiment, the number of video frames between two key frames may be sequentially reduced, and the video bit rate may be sequentially reduced in descending order of the network status level. Wherein, the reduction value or reduction ratio of each parameter can be set according to experience, and the key frame (that is, the I frame) can be an instant refresh frame.

Specifically, when the network state level is a high network state level, the number of video frames (Gop length, i.e. group of pictures) and the video bit rate between two key frames all adopt the preset picture group and video bit rate; When the network status level is medium network status level, the picture group can be reduced by 20% based on the preset Gop length, and the video bit rate can be reduced by 10% based on the preset picture group; at the network status level In the case of a low network status level, the group of pictures can be reduced by 40% based on the preset Gop length, and the video bit rate can be reduced by 30% based on the preset group of pictures.

Step S103: Encode the video data to be transmitted according to the encoding parameters and transmit the encoded video data to the client.

In one embodiment, encoding the video data to be transmitted according to encoding parameters and transmitting the encoded video data to the client may include: according to the number of video frames between two key frames corresponding to the current network status level, The video data is encoded and the encoded video data is transmitted to the client.

In one embodiment, encoding the video data to be transmitted according to the encoding parameters and transmitting the encoded video data to the client may include: modifying the frame type of the current video frame of the video data to be transmitted to an instant refresh frame (i.e. IDR frame); encode the video data to be transmitted according to the real-time refresh frame and transmit the encoded video data to the client. Among them, the IDR frame belongs to the I frame, but the I frame is not necessarily an IDR frame, and only the IDR frame has SPS (Sequence Parameter Set) and PPS (Picture Parameter Set). When the decoder receives an IDR frame, it clears the reference buffer; and when it receives an I frame, it does not clear the reference buffer (reference buffer), that is, for a frame after an IDR frame, the decoder does not refer to any frame before the IDR frame. The frame is decoded, and for a frame after an I frame, the decoder may refer to the frame before the I frame for decoding.

In an embodiment, encoding the video data to be transmitted according to encoding parameters and transmitting the encoded video data to the client may include: encoding the video data to be transmitted according to the video code rate, and transmitting the encoded video data to the client.

Specifically, in the encoder, adjust the Gop length and dynamic code rate of the video according to the encoding parameters corresponding to the current network status level, modify the frame type of the current video frame of the video data to be transmitted to an instant refresh frame, and adjust the frame type according to the adjusted The Gop length and the video code rate encode the video data to be transmitted to obtain the encoded video data. The embodiment of the present invention can reduce video stuttering by instantly refreshing the data to be transmitted and reducing the Gop length, and at the same time reduce the video bit rate of encoded video data and reduce the requirement of video data for network status, thereby improving user experience.

In one embodiment, before the encoded video data is transmitted to the client, it may also include: obtaining the quality compensation parameter corresponding to the current network state level; Quality compensation is performed on video frames between the refresh frame and the instant refresh frame.

In one embodiment, performing quality compensation on the video frame between the next instant refresh frame adjacent to the instant refresh frame and the instant refresh frame may include: a specified number of video frames after the instant refresh frame and The specified number of video frames before the next real-time refresh frame are used as the video frames to be compensated; according to the quality compensation parameters, according to the order of the video frames to be compensated, the quantization parameters of each video frame to be compensated are sequentially adjusted to perform quality compensation on the video frames to be compensated .

Specifically, since processes such as dynamic random access IDR and dynamically modified encoding GOP reduce the video quality to a certain extent, it is possible to perform quality compensation on the encoded video data, thereby compensating the video quality through quality compensation and improving user experience. viewing experience. Assume that the dynamically modified video encoding structure is:

IDR ₁ P ₁ P ₂ P ₃ P ₄ P ₅ P ₆ P ₇ P ₈ P ₉ P ₁₀ IDR ₂

Then, the video frames between the next instant refresh frame IDR ₂ adjacent to the instant refresh frame IDR ₁ and the instant refresh frame IDR ₁ include P ₁ , P ₂ , P ₃ , P ₄ , P ₅ , P ₆ , P ₇ , P ₈ , P ₉ , P ₁₀ , these 10 video frames, the video frames of the specified number (such as 20%) after the instant refresh frame IDR ₁ and the specified number of video frames before the next instant refresh frame IDR ₂ The video frame is used as the video frame to be compensated, and the video frame to be compensated includes P ₁ , P ₂ , P ₉ , and P ₁₀ . According to the quality compensation parameters, the quantization parameters of each video frame to be compensated are adjusted in sequence, Carry out quality compensation for the video frame to be compensated, if the quality compensation parameter is 1.0, then the quantization parameter of P ₁ is reduced by 1.0, and the quantization parameter of P ₂ is reduced (1.0+1.0*20%), that is, the quantization parameter of P ₂ is reduced by 1.2; Specifically, the quantization parameter of P ₉ is reduced by 1.0, and the quantization parameter of P ₁₀ is reduced by (1.0+1.0*20%), that is, the quantization parameter of P ₁₀ is reduced by 1.2. Perform quality compensation processing on the encoded video data according to the quantization parameters of each video frame, and transmit the quality-compensated video data to the client. Among them, quantization is to reduce the image coding length without reducing the visual effect, and reduce unnecessary information in visual restoration. The quantization parameter QP is the serial number of the quantization step Qstep. , when QP takes the maximum value of 51, it means that the quantization is the roughest, and the specified quantity and quality compensation parameters can be set corresponding to each network status level, and the quality compensation parameters are usually set at 1.0 to 3.0.

Fig. 2 is a schematic flowchart of a video data transmission method according to an embodiment of the present invention.

As shown in Figure 2, in one embodiment, the network situation of the client is monitored in real time, the current network status level of the client is determined based on the network situation, the encoding parameters corresponding to the current network status level are obtained, and the preset encoding parameters are dynamically adjusted , the video data is encoded and quality compensated by the encoder, and the encoded and quality compensated video data is transmitted to the decoder of the client, so that the user can watch the video data.

Fig. 3 is a schematic diagram of main modules of a device for transmitting video data according to an embodiment of the present invention.

As shown in FIG. 3 , a video data transmission device 300 according to an embodiment of the present invention mainly includes: a current network status level determination module 301 , a coding parameter acquisition module 302 , and a video data transmission module 303 .

The current network state level determination module 301 is configured to monitor the network conditions of the client in real time, and determine the current network state level of the client based on the network conditions.

The encoding parameter acquiring module 302 is configured to acquire encoding parameters corresponding to the current network status level when the current network status level is different from the original network status level.

The video data transmission module 303 is configured to encode the video data to be transmitted according to the encoding parameters and transmit the encoded video data to the client.

In one embodiment, the network condition may include a network packet loss rate, and the current network state level determination module 301 is specifically used to: monitor the network packet loss rate of the client in real time; The network packet loss rate determines the client's current network status level.

In one embodiment, the encoding parameters may include the number of video frames between two key frames, and the video data transmission module 303 is specifically configured to: according to the number of video frames between two key frames corresponding to the current network status level, the number of video frames to be transmitted The video data is encoded and the encoded video data is transmitted to the client.

In one embodiment, the encoding parameters may also include the frame type of the video frame, and the video data transmission module 303 is specifically configured to: modify the frame type of the current video frame of the video data to be transmitted to an instant refresh frame; The video data is encoded and the encoded video data is transmitted to the client.

In an embodiment, the encoding parameter may also include a video code rate, and the video data transmission module 303 is specifically configured to: encode the video data to be transmitted according to the video code rate, and transmit the encoded video data to the client.

In one embodiment, a quality compensation module (not shown in the figure) may also be included, configured to: acquire the quality compensation parameters corresponding to the current network state level; Quality compensation is performed on the video frames between the refresh frame and the instant refresh frame.

In one embodiment, the quality compensation module (not shown in the figure) is specifically configured to: use a specified number of video frames after the instant refresh frame and a specified number of video frames before the next instant refresh frame as video frames to be compensated; According to the quality compensation parameters, the quantization parameters of the video frames to be compensated are sequentially adjusted according to the order of the video frames to be compensated, so as to perform quality compensation on the video frames to be compensated.

In one embodiment, the number of video frames between two key frames decreases sequentially, and the video bit rate decreases sequentially according to the order of network status levels from high to low.

In addition, the specific implementation content of the video data transmission device in the embodiment of the present invention has been described in detail in the above video data transmission method, so the repeated content will not be described here.

Fig. 4 shows an exemplary system architecture 400 to which the method for transmitting video data or the apparatus for transmitting video data according to the embodiments of the present invention can be applied.

As shown in FIG. 4 , the system architecture 400 may include terminal devices 401 , 402 , 403 , a network 404 and a server 405 . The network 404 is used as a medium for providing communication links between the terminal devices 401 , 402 , 403 and the server 405 . Network 404 may include various connection types, such as wires, wireless communication links, or fiber optic cables, among others.

Users can use terminal devices 401 , 402 , 403 to interact with server 405 via network 404 to receive or send messages and the like. Various communication client applications can be installed on the terminal devices 401, 402, 403, such as live video applications, video conferencing applications, video applications, instant messaging tools, email clients, social platform software, etc. (just for example).

The terminal devices 401, 402, 403 may be various electronic devices with display screens and supporting web browsing, including but not limited to smart phones, tablet computers, laptop computers, desktop computers and the like.

The server 405 may be a server that provides various services, such as a background management server that provides support for live video websites browsed by users using the terminal devices 401 , 402 , 403 (just an example). The background management server can monitor the network situation of the client in real time on the received video data transmission request and other data, and determine the current network status level of the client based on the network situation; when the current network status level is different from the original network status level, obtain The encoding parameters corresponding to the current network status level; according to the encoding parameters, the video data to be transmitted is encoded and the encoded video data is transmitted to the client for processing, and the processing result (such as the transmission result of the video data - just an example) is fed back to the terminal device.

It should be noted that the video data transmission method provided by the embodiment of the present invention is generally executed by the server 405 , and correspondingly, the video data transmission device is generally set in the server 405 .

It should be understood that the numbers of terminal devices, networks and servers in Fig. 4 are only illustrative. According to the implementation needs, there can be any number of terminal devices, networks and servers.

Referring now to FIG. 5 , it shows a schematic structural diagram of a computer system 500 suitable for implementing a terminal device or a server according to an embodiment of the present invention. The terminal device or server shown in FIG. 5 is only an example, and should not limit the functions and application scope of this embodiment of the present invention.

As shown in FIG. 5 , a computer system 500 includes a central processing unit (CPU) 501 that can be programmed according to a program stored in a read-only memory (ROM) 502 or a program loaded from a storage section 508 into a random-access memory (RAM) 503 Instead, various appropriate actions and processes are performed. In the RAM 503, various programs and data necessary for the operation of the system 500 are also stored. The CPU 501 , ROM 502 , and RAM 503 are connected to each other through a bus 504 . An input/output (I/O) interface 505 is also connected to the bus 504 .

The following components are connected to the I/O interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section 507 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage section 508 including a hard disk, etc. and a communication section 509 including a network interface card such as a LAN card, a modem, or the like. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I/O interface 505 as needed. A removable medium 511, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is mounted on the drive 510 as necessary so that a computer program read therefrom is installed into the storage section 508 as necessary.

In particular, according to the disclosed embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the disclosed embodiments of the present invention include a computer program product, which includes a computer program carried on a computer-readable medium, where the computer program includes program codes for executing the methods shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from a network via communication portion 509 and/or installed from removable media 511 . When this computer program is executed by a central processing unit (CPU) 501, the above-mentioned functions defined in the system of the present invention are performed.

It should be noted that the computer-readable medium shown in the present invention may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. A computer readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to, electrical connections with one or more wires, portable computer diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable Programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above. In the present invention, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In the present invention, however, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program codes therein. Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. . Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, program segment, or portion of code that includes one or more logical functions for implementing specified executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. It should also be noted that each block in the block diagrams or flowchart illustrations, and combinations of blocks in the block diagrams or flowchart illustrations, can be implemented by a dedicated hardware-based system that performs the specified function or operation, or can be implemented by a A combination of dedicated hardware and computer instructions.

The modules involved in the embodiments described in the present invention may be realized by software or by hardware. The described modules can also be set in a processor, for example, it can be described as: a processor includes a current network status level determination module, a coding parameter acquisition module, and a video data transmission module. Among them, the names of these modules do not constitute a limitation of the module itself under certain circumstances. For example, the current network status level determination module can also be described as "used to monitor the network situation of the client in real time, and determine the client's network status based on the network situation." module at the current network state level".

As another aspect, the present invention also provides a computer-readable medium. The computer-readable medium may be contained in the device described in the above embodiments, or it may exist independently without being assembled into the device. The computer-readable medium carries one or more programs, and when the one or more programs are executed by the device, the device includes: monitoring the network conditions of the client in real time, and determining the current network status level of the client based on the network conditions; If the current network status level is different from the original network status level, obtain the encoding parameters corresponding to the current network status level; encode the video data to be transmitted according to the encoding parameters and transmit the encoded video data to the client.

According to the technical solution of the embodiment of the present invention, the network situation of the client is monitored in real time, and the current network status level of the client is determined based on the network situation; when the current network status level is different from the original network status level, the code corresponding to the current network status level is obtained Parameters; encode the video data to be transmitted according to the encoding parameters and transmit the encoded video data to the client. In the encoding stage of video data, the encoding parameters can be adjusted in real time according to the network status, reducing video freezes, ensuring instant video refresh, reducing video delay, improving the real-time performance of video data transmission, and at the same time compensating for the quality of video data , which can ensure video quality and improve user experience.

The above specific implementation methods do not constitute a limitation to the protection scope of the present invention. It should be apparent to those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (11)

1. A transmission method of video data, characterized in that, comprising: monitoring the network condition of the client in real time, and determining the current network state level of the client based on the network condition; In the case where the current network status level is different from the original network status level, acquiring a coding parameter corresponding to the current network status level; Encoding the video data to be transmitted according to the encoding parameters and transmitting the encoded video data to the client. 2. The method according to claim 1, wherein the network condition includes a network packet loss rate, the real-time monitoring of the network condition of the client, and determining the current network status level of the client based on the network condition, including : Monitor the network packet loss rate of the client in real time; The current network state level of the client is determined according to the preset network packet loss rate range of each network state level and the network packet loss rate. 3. The method according to claim 1, wherein the encoding parameters include the number of video frames between two key frames, and the video data to be transmitted is encoded according to the encoding parameters and the encoded video Data transmission to the client, including: Encoding the video data to be transmitted and transmitting the encoded video data to the client according to the number of video frames between two key frames corresponding to the current network state level. 4. The method according to claim 1 or 3, wherein the encoding parameters further include the frame type of the video frame, and the video data to be transmitted is encoded according to the encoding parameters and the encoded video data is transmitted to the client, including: Modifying the frame type of the current video frame of the video data to be transmitted to an instant refresh frame; Encoding the video data to be transmitted according to the instant refresh frame and transmitting the encoded video data to the client. 5. The method according to claim 4, wherein the encoding parameters further include a video code rate, and the video data to be transmitted is encoded according to the encoding parameters and the encoded video data is transmitted to the client terminal, including: Encoding the video data to be transmitted according to the video code rate, and transmitting the encoded video data to the client. 6. The method according to claim 5, wherein, before transmitting the encoded video data to the client, further comprising: Acquiring quality compensation parameters corresponding to the current network state level; Perform quality compensation on video frames between the next instant refresh frame adjacent to the instant refresh frame and the instant refresh frame according to the quality compensation parameter. 7. The method according to claim 6, wherein the quality compensation of the video frame between the next instant refresh frame adjacent to the instant refresh frame and the instant refresh frame comprises: Using a specified number of video frames after the instant refresh frame and a specified number of video frames before the next instant refresh frame as video frames to be compensated; According to the quality compensation parameter, according to the order of the video frames to be compensated, the quantization parameters of the video frames to be compensated are sequentially adjusted, so as to perform quality compensation on the video frames to be compensated. 8. The method according to claim 5, characterized in that, according to the order of the network status levels from high to low, the number of video frames between the two key frames decreases successively, and the video code rate decreases successively. Small. 9. A transmission device for video data, characterized in that, comprising: The current network state level determination module is used to monitor the network situation of the client in real time, and determine the current network state level of the client based on the network situation; An encoding parameter acquisition module, configured to acquire an encoding parameter corresponding to the current network status level when the current network status level is different from the original network status level; A video data transmission module, configured to encode the video data to be transmitted according to the encoding parameters and transmit the encoded video data to the client. 10. An electronic device, characterized in that it comprises: one or more processors; storage means for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors are made to implement the method according to any one of claims 1-8. 11. A computer-readable medium, on which a computer program is stored, wherein the computer program implements the method according to any one of claims 1-8 when executed by a processor.

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