CN111866603B - Video file production method based on SRS, background server and system - Google Patents

Video file production method based on SRS, background server and system Download PDF

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Publication number
CN111866603B
CN111866603B CN202010705461.4A CN202010705461A CN111866603B CN 111866603 B CN111866603 B CN 111866603B CN 202010705461 A CN202010705461 A CN 202010705461A CN 111866603 B CN111866603 B CN 111866603B
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file
video
video file
srs
index
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CN111866603A (en
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朱正辉
张常华
赵定金
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Guangdong Baolun Electronics Co ltd
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Guangzhou Baolun Electronics Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643Communication protocols
    • H04N21/6437Real-time Transport Protocol [RTP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85Assembly of content; Generation of multimedia applications
    • H04N21/858Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot

Abstract

The invention discloses a video file production method based on SRS, a background server and a system, comprising the following steps: s1: acquiring a live video stream, automatically generating a ts video file and a second index file according to a preset sequence by the SRS, and numbering the ts file according to the starting time and the ending time of the video to be recorded; s2: traversing the ts video file through a recording file analysis script which is input in advance, then dynamically acquiring file characteristic information of the ts video file, and assembling to generate a first index file; s3: the ts video file to which the loop of step S2 is looped and the generated first index file are both copied into the specified directory. In the invention, the ts video file is played by generating the first index file by assembling the file characteristic information of the ts video file, so that the ts video file can be played by a terminal without transcoding into other formats or extra merging, and the ts video file is prevented from being synthesized or transcoded by consuming a large amount of time.

Description

Video file production method based on SRS, background server and system
Technical Field
The invention relates to the technical field of video processing, in particular to a video file production method based on SRS, a background server and a system.
Background
Srs (simple RTMP server) is a very excellent open source streaming media server software, which can be used in various scenes such as live broadcast/recorded broadcast/video customer service, and its location is an operation-level internet live broadcast server cluster.
Currently, there are two methods for generating a recording file in a system (non-CDN deployment) that provides both live broadcast service and on-demand playback service in the market. Firstly, when a live broadcast device without a recording function (such as a camera and a third-party live broadcast stream) is docked, a live broadcast server is required to record an MP4 file at first, then the MP4 file is compatible with the broadcast of a mobile terminal, and the MP4 file is required to be transcoded into other formats suitable for the broadcast of the mobile terminal, such as M3U8, so that complete on-demand service can be provided; and secondly, butt-jointing live broadcast equipment with a recording function (company own live broadcast equipment or a universal third-party live broadcast product), butt-jointing through a TCP (transmission control protocol), controlling the live broadcast equipment to record, pause and stop to generate a recorded file, after the live broadcast is finished, the live broadcast equipment returns the recorded file to an appointed directory of a live broadcast server through an FTP (file transfer protocol) protocol and a pre-established FTP (file transfer protocol) service, then the live broadcast server scans the appointed directory again, and the recorded file is matched with, associated with or even updated in a database with live broadcast information. After recording the file, in order to be compatible with the mobile terminal playing, transcoding to another format suitable for the mobile terminal playing, for example, M3U8, is also required to provide the complete on-demand service. No matter which way produces the recording file, this process is all very complicated, not only make mistakes easily, but also waste time and energy, in addition live broadcast time is longer, the recording file that comes out follow-up is bigger, later transcoding time is longer, and because soft coding is long-consuming, so this process is consuming time very long, also can not release for a long time to the occupation of system resource simultaneously, and final result is that the video on demand service provides can seriously delay and lag, and user experience is relatively poor.
Disclosure of Invention
In order to overcome the disadvantages of the prior art, it is an object of the present invention to provide a method for producing a video file based on SRS, which can solve the problem that the provision of a video on demand service may be severely delayed and delayed.
The invention also aims to provide a video file production background server based on the SRS, which can solve the problems of serious delay and lag in the provision of the video-on-demand service.
It is a further object of the present invention to provide a video file production system based on SRS which can solve the problem that the provision of the video on demand service may be severely delayed and delayed.
In order to achieve one of the above purposes, the technical scheme adopted by the invention is as follows:
a video file production method based on SRS includes the following steps:
s1: acquiring a live video stream, generating a ts video file according to a preset sequence, and numbering the ts file according to the start time and the end time of a video to be recorded;
s2: traversing the ts video file through a recording file analysis script which is input in advance, then dynamically acquiring file characteristic information of the ts video file, and assembling to generate a first index file;
s3: the ts video file and the first index file are both copied to the specified directory.
Preferably, the step S1 is implemented by the following steps:
s11: acquiring a live video stream, generating a plurality of ts video files according to the live video stream in a preset sequence by configuring an SRS (sounding reference signal) distribution mode, numbering the ts files according to the start time and the end time of a video to be recorded, and storing the ts files in a storage;
s12: generating a second index file and storing the second index file to a storage;
s13: and playing the ts video file according to the preset sequence through the second index file.
Preferably, the preset sequence is a time sequence of playing live video stream signal pictures.
Preferably, the SRS distribution method is an HLS distribution method.
Preferably, the step S2 is implemented by the following steps:
s21: analyzing a SHELL script traversal ts video file through a recording file which is recorded in advance;
s22: and dynamically acquiring file characteristic information of the ts video file through an FFprobe command, and dynamically assembling the ts video file into a first index file.
Preferably, the file characteristic information includes a name, a number and a play time of the ts video file.
In order to achieve the second purpose, the technical scheme adopted by the invention is as follows:
a video file production background server based on SRS comprises a storage and a processor;
a memory for storing program instructions;
and the processor is used for operating the program instructions to execute the video file production method based on the SRS.
In order to achieve the third purpose, the technical scheme adopted by the invention is as follows:
a video file production system based on SRS comprises the video file production background server based on SRS, live broadcast equipment and playing equipment, wherein the live broadcast equipment and the playing equipment are connected with the video file production background server based on SRS.
Compared with the prior art, the invention has the beneficial effects that: the method comprises the steps of generating a ts video file and a dynamic second index file from a live video stream through an HLS distribution function of an SRS, playing the ts video file by utilizing the dynamic second index file, keeping the current live broadcast at a low delay and playing compatibility of terminal equipment, reducing the influence of the current live broadcast, dynamically assembling a first index file by adopting file characteristic information, storing the first index file and the ts video file into a directory which can be accessed by an HTTP server, enabling a user to directly access a stream media address of a point broadcast, normally playing the stream media address by loading a player, and providing video on demand service for the user as soon as possible without any coding or transcoding operation in the playing process.
Drawings
Fig. 1 is a flowchart of a video file production method based on SRS according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention will be further described with reference to the accompanying drawings and the detailed description below:
in the invention, the live broadcast equipment can be equipment without a recording function (without limiting butt joint equipment), a TCP (transmission control protocol) is not required to be customized to control the live broadcast equipment, an FTP (file transfer protocol) system is not required to be built, the deployment of a recorded file scanning service is avoided, the playing equipment can be equipment such as a computer and a mobile phone which can log in an HTTP server, and the specified directory is a directory which can be accessed by the HTTP server.
The first embodiment is as follows:
as shown in fig. 1, in this embodiment, a method for producing a video file based on an SRS includes the following steps:
s1: acquiring a live video stream, generating a ts video file according to a preset sequence, and numbering the ts file according to the start time and the end time of a video to be recorded;
specifically, after the video file production background server based on the SRS obtains the live video stream uploaded by the live device, the live video stream is sliced and stored, so as to facilitate the subsequent video on demand, in this embodiment, the S1 is specifically implemented by the following steps:
s11: acquiring a live video stream, generating a plurality of ts video files according to a preset sequence by configuring an SRS (sounding reference signal) distribution mode, preferably adopting an HLS (HTTP live streaming) distribution mode, numbering the ts files according to the start time and the end time of a video to be recorded, and storing the ts files in a storage;
specifically, after the video file production background server based on the SRS acquires a live video stream uploaded by live equipment, an HLS distribution mode is configured, the live video stream generates a plurality of ts video files according to the time sequence of the frame playing of the live video stream, the length of the playing time corresponding to each ts video file is unequal, and the ts video files are numbered according to the starting time and the ending time of the video to be recorded; in this embodiment, the SRS-based video file production background server can generate a first ts video file from 0 to 3 seconds of a live video stream, generate a second ts video file from 4 to 8 seconds, and generate a third ts video file from 9 to 10 seconds by configuring an HLS distribution manner, so forth, as the playing time is prolonged, the generated ts video files will be more, and the generated ts video files are numbered, starting from 1, 1 is added each time, that is, the number of the first ts video file is 1, the number of the second ts video file is 2, and the number of the nth ts video file is n (n belongs to a positive integer), and then the ts video files are stored in the storage;
s12: generating a second index file and storing the second index file to a storage;
specifically, while the video file production background server based on the SRS can generate the ts video file by configuring the HLS distribution method, a second index file, for example, index.m3u8, is also generated, and in this embodiment, the second index file is a dynamic index file, and is used for the current live broadcast, so that the current live broadcast can be kept at a relatively low delay, for example, compared with the RTMP distribution method, the delay can be stably kept within 30 seconds.
S13: playing the ts video file according to a preset sequence through the second index file;
specifically, after the video file production background server based on the SRS generates the second index file, for example, index.m3u8, the ts video file is played through the second index file, in this embodiment, the capacity of the second index file is limited, and only 1 or several ts video files can be stored at the same time, so that when the ts video file is played, the ts video file is sequentially held in the second index file index.m3u8 according to the time sequence of playing video stream signal pictures, for example, the capacity of the second index file index.m3u8 is a long-duration 20-second-ts video file, and the number: the ts video file of 1 has a duration of 5 seconds, and is numbered as follows: the ts video file of 2 has a duration of 6 seconds, and is numbered as follows: the duration of the ts video file of 3 is 9 seconds, and the number is as follows: the ts video file of 4 has a duration of 4 seconds, and is numbered as follows: the ts video file of 5 has a duration of 7 seconds, and is numbered: the ts video file of 6 has a duration of 5 seconds, and is numbered as follows: the time length of the ts video file of 7 is 4 seconds; then, before playing the ts video file, the second index file index.m3u8 stores the corresponding ts video file according to the numbering sequence and the self capacity, specifically, the number is stored first: 1-3 ts video file, and play number: ts video file of 1, play order 1-2-3. When the number is: after the ts video file of 1 is played, the number of playing is started: ts video file of 2, then number: 1, it should be noted that the deleted ts video file is the number: the ts video file of 1 records corresponding information in the second index file index.m3u8, instead of deleting the physical file, and then numbers: and (4) storing the ts video file of 4 into the second index file index.m3u8, wherein the playing sequence is 2-3-4, and so on until all ts video files are played.
S2: traversing the ts video file through a recording file analysis script which is input in advance, then dynamically acquiring file characteristic information of the ts video file, and assembling to generate a first index file;
specifically, with the extension of live broadcast time, ts video files generated by live broadcast video streams through HLS distribution by a video file production background server based on SRS become more and more, and until live broadcast ends, an SRS live broadcast system records ts video file numbers corresponding to start time and end time of a video as needed, and if the numbers are X and Y, the ts video files between X and Y are traversed to obtain file characteristic information corresponding to all ts video files, thereby generating a first index file, in this embodiment, S2 is specifically implemented by the following steps:
s21: analyzing a SHELL script traversal ts video file through a recording file which is recorded in advance;
specifically, a recording file analysis SHELL script is pre-entered, and all ts video files are traversed through the recording file analysis SHELL script, in this embodiment, if a live video stream is generated by a video file production background server based on an SRS through HLS distribution to generate 150 ts video files, the recording file analysis SHELL script traverses ts video files between 1(ts video file number) and 150(ts video file number) after the live broadcast is finished.
S22: and dynamically acquiring file characteristic information of the ts video file through an FFprobe command, and dynamically assembling the ts video file into a first index file.
Specifically, after the recorded file analysis SHELL script traverses all ts video files, the FFprobe command is executed to dynamically check and acquire file feature information of the ts video files, in this embodiment, the file feature information includes names, numbers and play durations of the ts video files, and when the FFprobe command dynamically acquires the names and the play durations of the ts video files, the first index file, such as live001.m3u8, is reassembled by using the names and the play durations of the ts video files.
S3: the ts video file and the first index file are both copied to the specified directory.
Specifically, after the SRS-based video file production background server generates the first index file by using the name and the playing duration of the ts video file, all ts video files (150 ts video files) and the first index file live001.m3u8 generated by HLS distribution are copied to a directory accessible by the HTTP server, that is, the video (ts video file) corresponding to the live broadcast can be directly accessed to the outside, specifically, a user can directly access an HTTP address in the format of the on-demand streaming media M3U8, and can normally play the video (ts video file) by loading the video on-demand streaming media player.
Example two:
a video file production background server based on SRS comprises a storage and a processor;
a memory for storing program instructions;
and the processor is used for executing the program instructions to execute the video file production method based on the SRS in the first embodiment.
Example three:
a video file production system based on SRS comprises a video file production background server based on SRS, live broadcast equipment and playing equipment, wherein the live broadcast equipment and the playing equipment are connected with the video file production background server based on SRS.
In this embodiment, the live broadcast device transmits a live broadcast video stream to the SRS-based video file production background server through the internet of things, and then the SRS-based video file production background server starts the SRS-based video file production method described in the first embodiment, so as to generate a ts video file and a first index file, and store the ts video file and the first index file in a directory accessible by the HTTP server, and a user can access the HTTP server through a mobile phone, a computer, a tablet computer, or other device to store the ts video file and the directory of the first index file, and view a video corresponding to the live broadcast video stream.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.

Claims (7)

1. A video file production method based on SRS is characterized by comprising the following steps:
s1: acquiring a live video stream, generating a ts video file according to a preset sequence, and numbering the ts file according to the start time and the end time of a video to be recorded;
s2: traversing the ts video file through a recording file analysis script which is input in advance, then dynamically acquiring file characteristic information of the ts video file, and assembling to generate a first index file;
s3: copying the ts video file and the first index file to a specified directory;
wherein, the step S1 is specifically realized by the following steps:
s11: acquiring a live video stream, generating a plurality of ts video files according to the live video stream in a preset sequence by configuring an SRS (sounding reference signal) distribution mode, numbering the ts files according to the start time and the end time of a video to be recorded, and storing the ts files in a storage;
s12: generating a second index file and storing the second index file to a storage;
s13: and playing the ts video file according to a preset sequence through the second index file, and deleting the played ts video file.
2. The SRS-based video file production method according to claim 1, wherein: the preset sequence is a time sequence for playing the live video stream signal pictures.
3. The SRS-based video file production method according to claim 1, wherein: the SRS distribution mode is an HLS distribution mode.
4. The SRS-based video file production method according to claim 1, wherein the step S2 is implemented by the steps of:
s21: analyzing a SHELL script traversal ts video file through a recording file which is recorded in advance;
s22: and dynamically acquiring file characteristic information of the ts video file through an FFprobe command, and dynamically assembling the ts video file into a first index file.
5. The SRS-based video file production method according to claim 1, wherein: the file characteristic information comprises the name, the number and the playing time length of the ts video file.
6. A video file production background server based on SRS is characterized in that: comprises a storage and a processor;
a memory for storing program instructions;
a processor for executing the program instructions to perform the SRS-based video file production method according to any one of claims 1 to 5.
7. A video file production system based on SRS, characterized in that: comprising the SRS-based video file production backend server, the live device and the playback device according to claim 6, wherein the live device and the playback device are connected to the SRS-based video file production backend server.
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Address after: No. 56 Nanli East Road, Shiqi Town, Panyu District, Guangzhou City, Guangdong Province, 510000

Patentee after: Guangdong Baolun Electronics Co.,Ltd.

Address before: 510000 Building 1, industrial zone B, Zhongcun street, Panyu District, Guangzhou City, Guangdong Province

Patentee before: GUANGZHOU ITC ELECTRONIC TECHNOLOGY Co.,Ltd.