CN113938470A - Method and device for playing RTSP data source by browser and streaming media server - Google Patents
Method and device for playing RTSP data source by browser and streaming media server Download PDFInfo
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Abstract
The invention belongs to the technical field of multimedia, and particularly relates to a method for playing RTSP data source by a browser, which comprises the following steps: receiving request information for playing an RTSP data source initiated by a browser, and receiving local cache video time reported by the browser according to preset time; initiating a request to a monitoring device according to the request information for playing the RTSP data source; acquiring streaming media data returned by the monitoring equipment according to the request; converting the streaming media data according to a preset conversion strategy to obtain video data in a specified format; and sending the video data in the specified format to a browser. The method has the advantages that the client does not need to install any software, the native support interface of the browser is used for playing the streaming media data, the browser is supported to be wide, and viewing, low-delay playing and dynamic frame rate control on the mobile phone are supported.
Description
Technical Field
The invention belongs to the technical field of multimedia, and particularly relates to a method and a device for playing an RTSP data source by a browser and a streaming media server.
Background
With the development of social construction and the improvement of safety awareness of people, safety monitoring is popularized to all corners in our lives, various cameras are everywhere, the camera monitoring with good quality promotes the development of video transmission technology, the cameras basically have a standard and mostly support RTSP (real time streaming protocol), a browser is used as the most popular internet surfing tool at present, and the method for viewing and monitoring the RTSP on the browser is indispensable.
In the existing technical scheme, the browser plays the RTSP video stream by the following three solutions:
the first scheme is as follows: h5+ websocket _ RTSP _ proxy realizes live broadcast of video stream, streammean is a technical scheme that 'html 5_ RTSP _ player + websocket _ RTSP _ proxy' is provided by a foreign enterprise streammean, and the video stream of RTSP can be directly played through a video tag of html 5. The method is divided into two parts, namely a server end and a browser end: the server side sends RTSP media data to the browser through the websocket, the media data are processed into MP4 in the browser by adopting a technology and sent to the browser video to be played, a PC client program is required to be installed in a local computer in the scheme, the scheme is similar to a plug-in, and the browser performance requirement is high for high-quality videos. It is not supported on the mobile phone.
Scheme II: RTSP is converted into RTMP to an RTMP server, http-FLV is converted, a playing end uses flv.js to play flv.js, after audio and Video data in an FLV format are obtained, an FLV file stream is transcoded and multiplexed into an ISO BMFF (MP4 fragment) fragment, and then the fragment is transmitted to a native HTML5 Video tag through a Media Source Extensions API (application program interface) to be played.
Js was written using ECMAScript6, then compiled by Babel Compiler into ECMAScript5, packaged using Browserify.
Js obtains the FLV from the server, decapsulates the FLV, and transfers the FLV to the Video tag for the following reasons:
compatible with the current live broadcast scheme: at present, most of audio and video services of the live broadcast scheme adopt an FLV (flash video) container format to transmit audio and video data.
The scheme is summarized that the RTSP is converted into the RTMP by the conversion protocol, the browser has a plurality of data supported by the RTMP, the defects are obvious, the delay is high, and the RTMP is not applicable to the condition that the real-time requirement of the monitoring video is high.
The third scheme is as follows: VLC or SmartPlayer third party plug-in play VLC multimedia players are VideoLAN planned multimedia players. The SmartPlayer is a playing plug-in of a cattle live broadcast SDK (Github), and has better delay and functional experience.
The plug-in form has the advantages that secondary conversion is not needed, the plug-in form is directly played in the form of an ActiveX control, the delay is very low, and the plug-in form only supports an IE browser. Mainstream browsers no longer support behind-plug-in solutions.
In summary, the first disadvantage of the prior art is that the intermediate program is installed on the PC computer, which is not supported by the mobile phone; the second disadvantage is that the RTSP protocol is converted into RTMP, the RTSP time delay control is lost, the delay is high, and the RTSP time delay is not suitable for the condition that the real-time requirement of the monitoring video is high; the third disadvantage is that the plug-in mode is used for playing in the browser, the mainstream browser no longer supports the plug-in, and the scheme is lagged behind.
Disclosure of Invention
In order to solve the problem that the browser in the prior art cannot directly play the RTSP data source, the embodiment of the present invention provides the following technical solutions:
in a first aspect, the present application provides a method for a browser to play an RTSP data source, including:
receiving request information for playing an RTSP data source initiated by a browser, and receiving local cache video time reported by the browser according to preset time;
initiating a request to a monitoring device according to the request information for playing the RTSP data source;
acquiring streaming media data returned by the monitoring equipment according to the request;
converting the streaming media data according to a preset conversion strategy to obtain video data in a specified format;
and sending the video data in the specified format to a browser.
Further, the converting the streaming media data according to the preset conversion policy includes:
acquiring local cache video time of a browser reported by the browser;
according to the local cache video duration of the browser, obtaining the playing frame rate of video data to be converted;
and according to the obtained play frame rate, carrying out conversion processing on the streaming media data.
Further, according to a preset conversion strategy, converting the streaming media data to obtain video data in a specified format, including:
and decoding and encoding the streaming media data to obtain decoding and encoding information, and sending the decoding and encoding information to the browser.
Further, according to the preset conversion strategy, the stream media data is converted to obtain the video data with the appointed format, and the method also comprises the following steps,
converting the streaming media data according to a preset playing format;
and encapsulating the streaming media data to obtain the streaming media data in the Fmp4 encapsulation format.
Further, still include:
receiving playing request information initiated by a browser, wherein the request information comprises an RTSP address, whether to start voice, a decoding type, a version number and a speed doubling value;
analyzing the RTSP address to obtain an analyzed RTSP address;
and initiating a request to the monitoring equipment according to the RTSP address.
In a second aspect, the present application provides an apparatus for playing an RTSP data source by a browser, including:
the receiving module is used for receiving request information for playing an RTSP data source initiated by the browser and receiving local cache video time reported by the browser according to preset time;
the request module is used for initiating a request to the monitoring equipment according to the request information for playing the RTSP data source;
the streaming media data acquisition module is used for acquiring streaming media data returned by the monitoring equipment according to the request;
the conversion module is used for carrying out conversion processing on the streaming media data according to a preset conversion strategy to obtain video data in a specified format;
and the sending module is used for sending the video data in the specified format to a browser.
In a third aspect, the present application provides a streaming media server, including:
a memory having an executable program stored thereon;
a processor for executing the executable program in the memory to implement the steps of the method of any one of claims 1-5.
The invention has the following beneficial effects:
the method for playing the RTSP data source by the browser provided by the embodiment of the invention comprises the following steps: receiving request information for playing an RTSP data source initiated by a browser, and receiving local cache video time reported by the browser according to preset time; initiating a request to a monitoring device according to the request information for playing the RTSP data source; acquiring streaming media data returned by the monitoring equipment according to the request; converting the streaming media data according to a preset conversion strategy to obtain video data in a specified format; and sending the video data in the specified format to a browser. The method has the advantages that the client does not need to install any software, the native support interface of the browser is used for playing the streaming media data, the browser is supported to be wide, and viewing, low-delay playing and dynamic frame rate control on the mobile phone are supported.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart illustrating a method for playing an RTSP data source by a browser according to an embodiment of the present invention.
Fig. 2 is a flowchart illustrating a method for playing an RTSP data source by a browser according to another embodiment of the present invention.
Fig. 3 is a block diagram of an apparatus for playing RTSP data source by a browser according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a streaming media server according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
To address the problem that a browser in the related art does not support direct playing of a data source, the present invention provides a method for playing an RTSP data source by a browser, and fig. 1 is a flowchart of a method for playing an RTSP data source by a browser according to an embodiment of the present application, as shown in fig. 1, the method includes the following steps: the method comprises the following steps:
step S11, receiving request information for playing RTSP data source initiated by the browser;
the browser sends the playing request to the streaming media server through Websocket communication. Among them, Websocket communication is the prior art, and this application does not improve it.
In this embodiment, the browser may be various browsers on various devices (pc, Android, ios), such as Chrome, Safari, Firefox, a built-in browser (WeChat, QQ), and the like.
In the prior art, the MediaSource is an API interface provided by a browser for playing streaming media data, and a streaming media file in a preset format can be directly played through the MediaSource.
In this embodiment, the preset format is Fmp4, and Fmp4 is a streaming media data package format that can be played by MediaSource.
Step S12, initiating a request to a monitoring device according to the request information of the RTSP data source playing;
the streaming media server initiates an RTSP request to the monitoring equipment to request to acquire an RTSP data source.
Socket communication is adopted between the streaming media server and the monitoring equipment. Wherein, the RTSP is a real-time streaming media transport protocol.
Step S13, acquiring the streaming media data returned by the monitoring equipment according to the request;
step S14, converting the streaming media data according to a preset conversion strategy to obtain video data in a specified format;
and step S15, sending the video data in the specified format to a browser.
The method for playing the RTSP data source by the browser provided by the embodiment of the invention receives the playing request information initiated by the browser; initiating an RTSP request to monitoring equipment according to the playing request information; acquiring streaming media data returned by the monitoring equipment according to the playing request; converting the streaming media data according to a preset playing format to obtain converted streaming media data; and sending the converted streaming media data to a browser. The method for playing the RTSP data source by using the native browser support interface without installing any software at the client supports the wide variety of browsers and supports the viewing on the mobile phone, is a low-delay control method, reports the local cache video duration at regular time through the browser, informs the server to control the real-time frame rate, and can ensure better delay under the condition of poor playing conditions.
As a further improvement of the foregoing method, in some embodiments, the converting the streaming media data according to the preset conversion policy includes:
acquiring local cache video time of a browser reported by the browser;
according to the local cache video duration of the browser, obtaining the playing frame rate of video data to be converted;
and according to the obtained play frame rate, carrying out conversion processing on the streaming media data.
The method includes that a browser reports local cache video time to a streaming media server at regular time, and the streaming media server analyzes the local cache video time reported by the browser; and dynamically controlling the video frame rate according to the cache condition of the browser.
As is well known, video itself displays images in sequence and at a specified time. The frame rate is the frequency (rate) at which bitmap images appear continuously on the display in units of frames;
the streaming media server opens up a frame buffer queue for each output, each frame of data analyzed from the RTSP source is sequentially placed into the buffer queue, the fmp4 synthesis processor sequentially fetches data push from the queue to the synthesizer, and finally outputs fmp4 data to be sent to the browser.
The data may be filtered and controlled, including whether it is selected for use, before each frame is pushed to the synthesizer, so that the real-time frame rate of the output fmp4 data may be controlled.
In some embodiments, converting streaming media data according to a preset conversion policy to obtain video data in a specified format includes:
and decoding and encoding the streaming media data to obtain decoding and encoding information, and sending the decoding and encoding information to the browser.
It can be understood that, the streaming media server decodes the streaming media data received from the monitoring device, then encodes the streaming media data and sends the encoded streaming media data to the browser, and in the decoding and encoding processes, the decoding information and the encoding information are sent to the browser, so that the browser prepares to initialize the player and play the streaming media data.
In some embodiments, the method further comprises converting the streaming media data according to a preset conversion policy to obtain video data in a specified format,
converting the streaming media data according to a preset playing format;
and encapsulating the streaming media data to obtain the streaming media data in the Fmp4 encapsulation format.
In this embodiment, the streaming media data is encapsulated by using an FFmpeg interface, so as to obtain the streaming media data in an Fmp4 encapsulation format.
FFmpeg is a set of open source computer programs that can be used to record, convert digital audio, video, and convert them into streams. LGPL or GPL licenses are used. It provides a complete solution for recording, converting and streaming audio and video. The present application does not improve on FFmpeg.
In some embodiments, further comprising:
receiving playing request information initiated by a browser, wherein the playing request information comprises an RTSP address, whether to start voice, a decoding type, a version number and a speed doubling value;
analyzing the RTSP address to obtain an analyzed RTSP address;
and initiating an RTSP request to the monitoring equipment according to the RTSP address.
For easy understanding, please refer to fig. 2, fig. 2 is a flowchart illustrating a method for playing RTSP data sources by a browser according to the present application.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an apparatus for playing RTSP data sources by a browser according to an embodiment of the present application, and as shown in fig. 3, the apparatus for playing RTSP data sources by the browser includes:
the receiving module 31 is configured to receive request information for playing an RTSP data source initiated by the browser, and receive a local cache video duration reported by the browser according to a preset time;
the request module 32 is configured to initiate a request to the monitoring device according to the request information for playing the RTSP data source;
a streaming media data obtaining module 33, configured to obtain streaming media data returned by the monitoring device according to the request;
the conversion module 34 is configured to perform conversion processing on the streaming media data according to a preset conversion policy to obtain video data in a specified format;
and a sending module 35, configured to send the video data in the specified format to a browser.
The embodiment of the invention provides a device for playing an RTSP data source by a browser, which receives request information for playing the RTSP data source initiated by the browser through a receiving module, and receives local cache video time reported by the browser according to preset time; initiating a request to the monitoring equipment according to the request information of the RTSP data source playing through a request module; the streaming media data obtaining module is used for obtaining the streaming media data returned by the monitoring equipment according to the request; converting the streaming media data through a conversion module according to a preset conversion strategy to obtain video data in a specified format; and sending the video data in the specified format to a browser through a sending module. Through the cooperative work of the modules, the functions of the client-side, without installing any software, playing by using a native browser support interface, supporting a wide variety of browsers, supporting mobile phone viewing, low-delay playing and dynamic frame rate control are realized.
Referring to fig. 4, as a further improvement of the foregoing embodiment, fig. 4 is a schematic structural diagram of a streaming media server provided in the present application, and as shown in fig. 4, the streaming media server includes a memory 41 and a processor 42, where the memory 41 stores an executable program; a processor 42 for executing the executable program in the memory to implement the steps of the method of any of the above embodiments.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (7)
1. A method for playing RTSP data source by a browser, comprising:
receiving request information for playing RTSP data source initiated by a browser;
initiating a request to a monitoring device according to the request information for playing the RTSP data source;
acquiring streaming media data returned by the monitoring equipment according to the request;
converting the streaming media data according to a preset conversion strategy to obtain video data in a specified format;
and sending the video data in the specified format to a browser.
2. The method according to claim 1, wherein the converting the streaming media data according to the preset conversion policy includes:
acquiring local cache video time of a browser reported by the browser;
according to the local cache video duration of the browser, obtaining the playing frame rate of video data to be converted;
and according to the obtained play frame rate, carrying out conversion processing on the streaming media data.
3. The method of claim 1, wherein converting the streaming media data according to a predetermined conversion policy to obtain video data in a specific format comprises:
and decoding and encoding the streaming media data to obtain decoding and encoding information, and sending the decoding and encoding information to the browser.
4. The method of claim 1, wherein the streaming media data is transformed according to a predetermined transformation strategy to obtain video data in a specific format, further comprising,
converting the streaming media data according to a preset playing format;
and encapsulating the streaming media data to obtain the streaming media data in the Fmp4 encapsulation format.
5. The method of claim 1, further comprising:
receiving playing request information initiated by a browser, wherein the request information comprises an RTSP address, whether to start voice, a decoding type, a version number and a speed doubling value;
analyzing the RTSP address to obtain an analyzed RTSP address;
and initiating a request to the monitoring equipment according to the RTSP address.
6. An apparatus for playing RTSP data source by a browser, comprising:
the receiving module is used for receiving request information for playing an RTSP data source initiated by the browser and receiving local cache video time reported by the browser according to preset time;
the request module is used for initiating a request to the monitoring equipment according to the request information for playing the RTSP data source;
the streaming media data acquisition module is used for acquiring streaming media data returned by the monitoring equipment according to the request;
the conversion module is used for carrying out conversion processing on the streaming media data according to a preset conversion strategy to obtain video data in a specified format;
and the sending module is used for sending the video data in the specified format to a browser.
7. A streaming media server, comprising:
a memory having an executable program stored thereon;
a processor for executing the executable program in the memory to implement the steps of the method of any one of claims 1-5.
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