CN113556612A - Method and system for playing H.265 video stream on browser - Google Patents
Method and system for playing H.265 video stream on browser Download PDFInfo
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- CN113556612A CN113556612A CN202110801722.7A CN202110801722A CN113556612A CN 113556612 A CN113556612 A CN 113556612A CN 202110801722 A CN202110801722 A CN 202110801722A CN 113556612 A CN113556612 A CN 113556612A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012544 monitoring process Methods 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006854 communication Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Classifications
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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
- H04N21/47—End-user applications
- H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
- H04N21/4782—Web browsing, e.g. WebTV
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/81—Monomedia components thereof
- H04N21/8166—Monomedia components thereof involving executable data, e.g. software
- H04N21/8173—End-user applications, e.g. Web browser, game
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
Abstract
The invention discloses a method and a system for playing H.265 video stream on a browser.A decoding service program is installed on client equipment, WebSocket long connection between the browser and the decoding service is established, decoded one-dimensional RGBA data is continuously pushed to the browser through the WebSocket, and the browser adopts a canvas assembly to draw decoded video frame data stream. The decoding service program can guarantee the operation performance and guarantee that the local service continuously and effectively pushes data to the browser, and has the characteristics of difficult flow break and low delay. According to the technical scheme, the browser can preview in real time, and the playing video has the advantages of low time delay, difficulty in cutoff, strong controllability and the like.
Description
Technical Field
The application belongs to the technical field of video coding and decoding, and particularly relates to a method and a system for playing an H.265 video stream on a browser.
Background
At present, the technology of adopting a C/S framework to perform real-time preview in the security industry is mature, but with diversified market demands, a B/S framework can be applied to many occasions, and in the B/S framework, the requirement on real-time performance is not high or the technical requirement on coded video streaming is not high, and the real-time preview can be directly played by adopting a label related to HTML 5. In real-time video live broadcast application, a B/S framework has a plurality of short boards relative to a C/S framework, and the existing partial open-source player schemes have the problems of large time delay, blockage and partial format unsupported, so that the actual production requirements are difficult to meet.
However, many shots are optimized by an encoding algorithm to adopt the H.265 encoding standard, but the browser does not support the H.265. H.265 is a new encoding protocol, namely an upgraded version of h.264. The h.265 standard retains some of the original h.264 technology while improving on some of the related technologies. The new technology uses advanced technology to improve the relationship between code stream, coding quality, time delay and algorithm complexity, so as to achieve the optimal setting. H.265 uses advanced technology to improve the relationship between code stream, coding quality, delay and algorithm complexity to achieve optimal settings. H.265 is the latest video compression coding, and the coding efficiency is greatly improved compared with H.264. So to speak, the video quality of h.265 is the best for the same file size; the volume of h.265 is minimal for equivalent video quality. However, because the codes are newer, some playing software, high-definition players, high-definition boxes, smart televisions and smart phones do not support the codes. Therefore, it is a mainstream trend that many shots adopt H.265 through optimization of a coding algorithm, but until now, all H.265 is not supported by a browser which is a foundation of a B/S structure, and how to realize live broadcasting of an H.265 standard video on the browser becomes a technical problem to be solved urgently in the industry.
Disclosure of Invention
The application aims to provide a method and a system for playing an H.265 video stream on a browser, which are used for playing the H.265 video stream on the browser.
In order to achieve the purpose, the technical scheme of the application is as follows:
a method of playing an h.265 video stream on a browser, the browser being installed on a client device, the method of playing an h.265 video stream on the browser comprising:
opening a browser on client equipment, logging in a monitoring interface, operating a real-time preview equipment tree channel on the monitoring interface, judging whether decoding service pre-installed on the client equipment is ready, and if so, establishing long connection between the browser and the decoding service through WebSocket;
passing video playback parameters of the operated channel to the decoding service, the decoding service adaptively matching a decoding mode;
the decoding service decodes the video stream of the operated channel and continuously pushes the decoded data to the browser;
and the browser adopts a canvas component to draw the decoded data and then plays the data on the browser.
Further, the video playing parameters include RTSP streaming information and canvas component drawing size.
Further, the determining whether the decoding service pre-installed on the client device is ready includes:
and establishing an HTTP connection with the decoding service specific interface, judging that the decoding service is not ready if the request is not successful, and judging that the decoding service is ready if the request response is successful.
Further, after the browser is opened on the client device and the monitoring interface is logged in, the method further includes:
the browser selects the decoding service version corresponding to the current system according to the current system installation environment, judges whether the decoding service version corresponding to the current system is installed on the client equipment, and prompts to download and install the corresponding decoding service version if the decoding service version corresponding to the current system is not installed on the client equipment.
The application also provides a system for playing the H.265 video stream on the browser, which comprises client equipment, the browser is installed on the client equipment, the decoding service is also installed on the client equipment in advance, wherein:
the browser opens the browser on the client device, logs in a monitoring interface, judges whether a decoding service pre-installed on the client device is ready or not when operating a real-time preview device tree channel on the monitoring interface, and establishes long connection with the decoding service through WebSocket if the decoding service is ready; passing video playback parameters of the operated channel to the decoding service, the decoding service adaptively matching a decoding mode;
the decoding service is used for decoding the video stream of the operated channel and continuously pushing the decoded data to the browser;
the browser is further used for playing the decoded data on the browser after being drawn by the canvas assembly.
Further, the video playing parameters include RTSP streaming information and canvas component drawing size.
Further, the browser determines whether a decoding service pre-installed on the client device is ready, and performs the following operations:
and establishing an HTTP connection with the decoding service specific interface, judging that the decoding service is not ready if the request is not successful, and judging that the decoding service is ready if the request response is successful.
Further, after the browser is opened on the client device and the monitoring interface is logged in, the browser further performs the following operations:
the browser selects the decoding service version corresponding to the current system according to the current system installation environment, judges whether the decoding service version corresponding to the current system is installed on the client equipment, and prompts to download and install the corresponding decoding service version if the decoding service version corresponding to the current system is not installed on the client equipment.
According to the method and the system for playing the H.265 video stream on the browser, the decoding service program is installed on the client locally, the decoding service program adopts FFmpeg decoding, WebSocket long connection between the browser and the decoding service is established, decoded one-dimensional RGBA data is continuously pushed to the browser through WebSocket, and the browser adopts a canvas assembly to draw the decoded video frame data stream. The decoding service program written by the C can guarantee the operation performance and the continuous and effective pushing of data to the browser by the local service, and has the characteristics of difficult cutoff and low delay. According to the technical scheme, the browser can preview in real time, and the playing video has the advantages of low time delay, difficulty in cutoff, strong controllability and the like.
Drawings
FIG. 1 is a schematic diagram of an application environment of the present application;
fig. 2 is a flowchart of a method for playing an h.265 video stream on a browser according to the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The method for playing the H.265 video stream on the browser is applied to the application environment shown in fig. 1, and a live video of front-end equipment of a monitoring system is checked based on a B/S architecture. The browser is installed on the client device, and the decoding service program for decoding is also installed on the client device. Client equipment is connected with back-end equipment, and front-end equipment passes through the network and is connected with back-end equipment, and this application client equipment can be: PC, intelligent terminal, etc.; the backend device may be: network video recorders or other video stream distribution devices; the front-end equipment is various video acquisition equipment, and is commonly used as a network camera IPC.
Embodiment 1, as shown in fig. 2, a method for playing an h.265 video stream on a browser includes:
step S1, opening a browser on the client device, logging in a monitoring interface, operating the real-time preview device tree channel on the monitoring interface, judging whether the decoding service pre-installed on the client device is ready, and if so, establishing long connection between the browser and the decoding service through WebSocket.
The application applies to the B/S architecture, i.e., Browser/Server architecture, where a Browser is employed on a client device to view live video.
The method includes the steps that a URL corresponding to a monitoring interface is input on a browser, the monitoring interface can be opened, a real-time preview device tree page is displayed, then a real-time preview device tree channel is operated, and a live picture of front-end equipment (such as a camera) corresponding to the channel is checked.
Because the current browser does not support H.265, the decoding service program for decoding is installed on the client device, the decoding service program is written by C language, and encapsulates FFmpeg codec packets, FFmpeg is a set of open source computer program which can be used for recording and converting digital audio and video and can convert the digital audio and video into stream, and its 8 libraries include: avcodec, avformat, avfilter, avdevice (input/output of various devices), avautil, postproc, swresample, and swscale. The method and the device can be used for realizing compatibility of H.264 and H.265 by using FFmpeg decoding, matching is carried out according to information transmitted by an RTSP stream address, and finally corresponding decoding data information is output.
After the real-time preview device tree channel is operated, whether a decoding service is ready or not is judged, and if the decoding service is ready, the browser establishes long connection with the decoding service through WebSocket. Websocket is regarded as a socket technology similar to TCP/IP, is realized in a browser, and obtains a full two-way communication function as flexible and convenient as TCP/IP communication. WebSocket is a technique for arbitrary bidirectional data transmission between a browser and a server. The WebSocket protocol is realized based on a TCP protocol and comprises an initial handshake process and a subsequent multi-time data frame bidirectional transmission process. The method aims to ensure that the server can actively push data to the front end continuously when the WebSocket application and the WebSocket server carry out frequent bidirectional communication, so that the working efficiency and the resource utilization rate are improved.
According to the method and the device, before the video is played, the fact that the decoding service is installed locally on the client side equipment is firstly ensured, whether the decoding service is installed or not needs to be detected when a browser loads an interface for the first time, if the decoding service is not installed, a user is prompted to download and install, and when a real-time preview equipment tree channel is operated, the condition of service readiness needs to be judged.
In an implementation manner of this embodiment, the determining whether a decoding service pre-installed on the client device is ready includes:
and establishing an HTTP connection with the decoding service specific interface, judging that the decoding service is not ready if the request is not successful, and judging that the decoding service is ready if the request response is successful.
In this embodiment, a specific interface corresponding to the decoding service is set, so that whether the decoding service is ready can be determined by establishing an HTTP connection to the specific interface, if the request is successful, the decoding service is ready, otherwise, it is determined that the decoding service is not ready, and a decoding service program is prompted to be started first. However, it should be noted that, whether the decoding service is ready or not may be determined, and whether the program running in the background includes the decoding service program or not may also be directly checked, and if so, the decoding service is considered to be ready, otherwise, the decoding service is determined not to be ready.
In another implementation manner of this embodiment, the browser logs in the monitoring interface, and may also detect whether there is an installation of the decoding service, and if not, prompt the user to download and install. As to how to detect whether the decoding service program is installed, it is possible to check a registry, or check an installation directory, or establish an HTTP connection to a decoding service program specific interface and check whether the request is successful, and prompt downloading of the decoding service program if it is checked that the decoding service is not installed.
Step S2, transferring the video playing parameters of the operated channel to the decoding service, where the decoding service adaptively matches the decoding mode.
After the WebSocket long connection is established, the video playing parameters of the channel are transmitted to the decoding service through the WebSocket long connection, and the video playing parameters comprise RTSP stream pulling information, the size of canvas component drawing and the like.
The decoding service program adaptively matches a decoding mode, such as h.264 or H265, after obtaining the parameters.
And step S3, the decoding service decodes the video stream of the operated channel and continuously pushes the decoded data to the browser.
After a real-time preview device tree channel is operated on a browser, a video stream is obtained from a front-end device corresponding to the channel and is sent to a decoding service for decoding through a WebSocket long connection, and after decoding, decoded video data is sent to the browser through the WebSocket long connection.
When decoding, the decoding service program pushes abnormal information if the decoding is abnormal. The data format decoded by the decoding service adopts RGBA, and the canvas component can directly draw the data format.
And step S4, the browser adopts a canvas component to draw the decoded data and then plays the data on the browser.
And after the browser receives the decoded data, drawing the image by adopting the canvas assembly, and displaying the image in the drawing frame.
and the browser selects the decoding service version corresponding to the current system according to the current system installation environment, judges whether the decoding service version corresponding to the current system is installed on the client equipment, and prompts to download and install the corresponding decoding service version if the decoding service version corresponding to the current system is not installed on the client equipment.
Many practical applications face the problem of browser compatibility and the problem of incompatibility when installed in different operating systems, so that it is a difficult problem to be solved in the industry to be compatible with different versions of browser playing h.265 in different systems.
Therefore, in this embodiment, corresponding decoding service programs are developed for different versions of browsers and different operating systems, after a browser login monitoring interface is opened, it is first determined what operating system is currently, and what browser version is used, and then the decoding service program of the corresponding version is determined. Therefore, whether the decoding service version corresponding to the current system is installed on the client equipment is judged, and if not, downloading and installing of the corresponding decoding service version is prompted.
By the method of the embodiment, the method can be compatible with various versions of browsers and various operating systems.
Another embodiment of the present application further provides a system for playing an h.265 video stream on a browser, including a client device, where the client device is installed with the browser, and the client device is also installed with a decoding service in advance, where:
the browser opens the browser on the client device, logs in a monitoring interface, judges whether a decoding service pre-installed on the client device is ready or not when operating a real-time preview device tree channel on the monitoring interface, and establishes long connection with the decoding service through WebSocket if the decoding service is ready; passing video playback parameters of the operated channel to the decoding service, the decoding service adaptively matching a decoding mode;
the decoding service is used for decoding the video stream of the operated channel and continuously pushing the decoded data to the browser;
the browser is further used for playing the decoded data on the browser after being drawn by the canvas assembly.
In this embodiment, for a specific implementation of a system for playing an h.265 video stream on a browser, reference may be made to the above definition of a method for playing an h.265 video stream on a browser, which is not described herein again.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A method for playing an h.265 video stream on a browser, the browser being installed on a client device, the method for playing the h.265 video stream on the browser comprising:
opening a browser on client equipment, logging in a monitoring interface, operating a real-time preview equipment tree channel on the monitoring interface, judging whether decoding service pre-installed on the client equipment is ready, and if so, establishing long connection between the browser and the decoding service through WebSocket;
passing video playback parameters of the operated channel to the decoding service, the decoding service adaptively matching a decoding mode;
the decoding service decodes the video stream of the operated channel and continuously pushes the decoded data to the browser;
and the browser adopts a canvas component to draw the decoded data and then plays the data on the browser.
2. The method of claim 1, wherein the video playing parameters comprise RTSP pull stream information and canvas component drawing size.
3. The method of claim 1, wherein said determining whether a pre-installed decoding service on the client device is ready comprises:
and establishing an HTTP connection with the decoding service specific interface, judging that the decoding service is not ready if the request is not successful, and judging that the decoding service is ready if the request response is successful.
4. The method of claim 1, wherein after the browser is opened on the client device and the monitoring interface is logged on, further comprising:
the browser selects the decoding service version corresponding to the current system according to the current system installation environment, judges whether the decoding service version corresponding to the current system is installed on the client equipment, and prompts to download and install the corresponding decoding service version if the decoding service version corresponding to the current system is not installed on the client equipment.
5. A system for playing H.265 video stream on a browser comprises a client device, wherein the client device is provided with the browser, and is characterized in that the client device is also provided with a decoding service in advance, wherein:
the browser opens the browser on the client device, logs in a monitoring interface, judges whether a decoding service pre-installed on the client device is ready or not when operating a real-time preview device tree channel on the monitoring interface, and establishes long connection with the decoding service through WebSocket if the decoding service is ready; passing video playback parameters of the operated channel to the decoding service, the decoding service adaptively matching a decoding mode;
the decoding service is used for decoding the video stream of the operated channel and continuously pushing the decoded data to the browser;
the browser is further used for playing the decoded data on the browser after being drawn by the canvas assembly.
6. The system for playing back h.265 video stream on a browser as recited in claim 5, wherein said video playing parameters include RTSP pull stream information and canvas component drawing size.
7. The system of claim 5, wherein the browser determines whether a pre-installed decoding service on the client device is ready to perform the following operations:
and establishing an HTTP connection with the decoding service specific interface, judging that the decoding service is not ready if the request is not successful, and judging that the decoding service is ready if the request response is successful.
8. The system for playing back an h.265 video stream on a browser as recited in claim 5, wherein after the browser is opened on the client device and the monitoring interface is logged on, the browser further performs the following operations:
the browser selects the decoding service version corresponding to the current system according to the current system installation environment, judges whether the decoding service version corresponding to the current system is installed on the client equipment, and prompts to download and install the corresponding decoding service version if the decoding service version corresponding to the current system is not installed on the client equipment.
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| CN202110801722.7A CN113556612A (en) | 2021-07-15 | 2021-07-15 | Method and system for playing H.265 video stream on browser |
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| CN202110801722.7A CN113556612A (en) | 2021-07-15 | 2021-07-15 | Method and system for playing H.265 video stream on browser |
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