WO2013152689A1

WO2013152689A1 - Background control method and system for video playing

Info

Publication number: WO2013152689A1
Application number: PCT/CN2013/073628
Authority: WO
Inventors: 王森林
Original assignee: 天脉聚源(北京)传媒科技有限公司
Priority date: 2012-04-12
Filing date: 2013-04-02
Publication date: 2013-10-17
Also published as: CN102857797A; CN102857797B

Abstract

A background control method and system for video playing are disclosed. Firstly, after receiving an instruction message from a client, a server parses the instruction message to determine program list update information, program type information and M3U8 play list address information; the server judges, according to the program list update information acquired from the parsed instruction message, whether to alter the current program on the client, acquires an M3U8 play list of the program and a TS file, rearranges the TS file code stream, outputs the TS file sequence, acquires, according to the TS file sequence, the M3U8 live list, and outputs the M3U8 live list to the client. The present invention enables the internet TV programming to be more simple and easy to operate, and reduces the live delay time.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention This application claims to be filed on April 12, 2012, the Chinese Patent Office, the application No. 201210106533.9, and the Chinese patent application entitled "A Background Control Method and System for Video Playback" Priority is hereby incorporated by reference in its entirety. Technical field

The present invention relates to the field of Internet television broadcast control technologies, and in particular, to a background control method and system for video playback. Background technique

At present, as more and more Internet TV users in China and SD and even HD video become more and more popular, Internet TV operators' servers need to provide a large number of HD live broadcast and on-demand services. Due to network bandwidth limitations, the video playback of the client is not smooth enough. Simple, live broadcast delay time is long, and live video programs cannot be viewed back, and users have a poor experience with the services provided by operators. Summary of the invention

The object of the present invention is to provide a background control method and system for video playback, which uses the M3U8 protocol to rearrange the internal parameters of the video file and the live video stream, adjust and store the code stream, and form a virtual live stream, in the form of a live broadcast list of M3U8. The release of Internet TV programs makes the layout of Internet TV programs simpler and easier to operate, and the on-demand and live broadcast delays are shorter, realizing the live broadcast review function.

An aspect of the present invention provides a background control method for video playback, which is applicable to the field of Internet television broadcast control, and includes the following steps:

Step A: After receiving the instruction message sent by the client, the server parses the instruction message, and obtains the program list update information, the program type information, the program start end time stamp information, and the M3U8 play list address information;

Step B, according to the program list update information, determine whether it is necessary to replace the program currently played by the client, and if so, go to step C; Step c: determining, according to the program type information, whether the program type information is a live program, if not, acquiring an M3U8 playlist according to the M3U8 playlist address information, and proceeding to step D, if it is a live program, converting the current time into a current a timestamp, obtaining an M3U8 playlist corresponding to the current timestamp according to the M3U8 playlist address information, and proceeding to step D;

Step D: parsing the M3U8 playlist, obtaining a TS file address, obtaining a TS file, and buffering;

Step E: Decoding the TS file, adjusting parameters, rearranging, writing a continuous time stamp, and outputting a TS file sequence;

Step F: Create an M3U8 live broadcast list according to the TS file sequence, store the TS file sequence in a database, and output an M3U8 live broadcast list to the client.

Further, the instruction message sent by the client is an XML file.

Further, step B further includes the following steps: If the program currently played by the client is not required to be replaced, the process stops.

Further, step C further includes the following steps:

Converting the current time to the current timestamp, determining whether the current timestamp is in the range of the start timestamp information of the program, and if the program is being broadcasted, obtaining the M3U8 according to the M3U8 playlist address information corresponding to the current timestamp. Playing the playlist, and re-acquiring the updated M3U8 playlist according to the address of the M3U8 playlist corresponding to the current timestamp every preset time interval, if the current timestamp is not in the range of the start timestamp information of the program, the program stops or has not yet The broadcast is started, and it is re-determined every preset time whether the current time stamp converted into the current time is in the program start end time stamp range.

Another aspect of the present invention provides a background control system for video playback, which is adapted to the field of Internet television broadcast control, including a central control device, an interface device, an M3U8 playlist acquisition and parsing device, a rectification device, an instruction message parsing device, and a queue management. The central control device is respectively connected to the interface device, the M3U8 playlist acquisition and analysis device, the rectifying device, and the command message parsing device, and the queue management device is respectively connected to the M3U8 playlist acquisition and parsing device and the rectifying device; The central control device is used for invoking between devices;

The interface device is configured to provide an interface service to the outside;

The M3U8 playlist acquisition parsing device is configured to obtain an M3U8 playlist according to the M3U8 playlist address, parse the M3U8 playlist, and obtain a TS file;

The rectifying device is configured to demultiplex the obtained TS file, input a continuous time stamp, adjust the encoding parameters, and re-multiplex, to form a TS file sequence, and obtain the M3U8 live broadcast list according to the TS file sequence, and output the TS File sequence, output M3U8 live broadcast list;

The instruction message parsing apparatus is configured to implement loading, parsing, and storing of an instruction message; and the queue management apparatus is configured to implement management of a TS file address queue and a TS file rectification queue. Further, the central control device further includes a control function module and a proxy function module, where the control function module is used for starting and stopping the thread;

The proxy function module is used to correspond to other devices. The technical effects of the present invention are:

It can provide a virtual form of video live broadcast for Internet TV users, making the layout of Internet TV programs simpler and easier to operate, and the on-demand and live broadcast delay time is shorter, realizing the live broadcast review function.

Other features and advantages of the invention will be set forth in the description which follows, The objectives and other advantages of the invention will be realized and attained by the <RTI

The technical solution of the present invention will be further described in detail below through the accompanying drawings and embodiments. DRAWINGS

The drawings are intended to provide a further understanding of the invention, and are intended to be a part of the description of the invention. In the drawings: FIG. 1 is a flow chart of a background control method for video playback in a specific embodiment of the present invention.

2 is a schematic structural diagram of a background control system for video playback in a specific embodiment of the present invention. detailed description

The preferred embodiments of the present invention are described with reference to the accompanying drawings, and the preferred embodiments of the present invention are intended to illustrate and explain the invention.

1 is a detailed flowchart of a background control method for video playback in a specific embodiment of the present invention. As shown in FIG. 1 , the flow of the background control method for video playback specifically includes the following steps:

Step 101: After receiving the instruction message sent by the client, the server parses the instruction message, and obtains the program list update information, the program type information, the program start end time stamp information, and the M3U8 (--code format) playlist address information.

The instruction message sent by the client is an Extensible Markup Language (XML) format file;

The program list update information is a cmd field. If cmd=l, it indicates that the program list has been updated. If cmd=2, it indicates that the program list is not updated.

The video source ID (identification) information is a sourceld field, and the video source ID is stored;

The program type information is a sourceType field. If sourceType=l, it indicates that the program type is a direct broadcast program. If sourceType=2, it indicates that the program type is not a live program;

The start timestamp information of the program is a sourceTime field, and the start time stamp and the end time stamp of the program are recorded;

The M3U8 playlist address information is the m3u8Id field, and the M3U8 playlist address is recorded. Step 102: According to the program list update information, determine whether it is necessary to replace the program played by the current client. If cmd=l, go to step 103. If cmd=2, the process stops.

Step 103: Determine, according to the program type information, whether the program type information is a live program. If sourceType=2, go to step 104. If sourceType=1, go to step 105.

Step 104: Acquire an M3U8 playlist according to the M3U8 playlist address information, and go to step 106.

Step 105: Convert the current time into a current timestamp of the unix, and determine whether the current timestamp is in the sourceTime field. If the program is being broadcasted, the M3U8 corresponding to the current timestamp. The M3U8 playlist is obtained by the address of the playlist, and the updated M3U8 playlist is obtained according to the address of the M3U8 playlist corresponding to the timestamp every 3 seconds. If the timestamp is not in the sourceTime field, the program stops or has not been broadcasted. It is re-determined every 10 seconds whether the time stamp converted into the current time is in the sourceTime field.

Step 106: Parse the M3U8 playlist, obtain a TS (a file format) file address, obtain a TS file, and cache.

Step 107: Decode the TS file, adjust a video format, an audio format, a DTS (Digital Theatre System, an audio format), a frame rate, and a bit rate, rearrange and write a continuous time stamp, and output a TS. File sequence.

Step 108: Find an absolute path of the current TS file according to the apache (a server) publishing directory, write the M3U8 live broadcast list, and store the TS file sequence in the database.

Step 109: Output the M3U8 live broadcast list to the client.

2 is a schematic structural diagram of a background control system for video playback in a specific embodiment of the present invention. As shown in FIG. 2, the system of the background control system for video playback mainly includes the following devices: a central control device 201, an interface device 202, an M3U8 playlist acquisition parsing device 203, a rectifying device 204, an instruction message parsing device 205, and a queue management. Device 206. The central control unit further includes a control function module 2011 and a proxy function module 2022.

The central control unit 201 is connected to the interface unit 202, the M3U8 playlist acquisition and analysis unit 203, the rectifying unit 204, and the command message analyzing unit 205, respectively. The queue management device 206 is connected to the M3U8 playlist acquisition analyzing device 203 and the rectifying device 204, respectively.

The central control device 201 is used to implement inter-device calls, wherein the control function module 2011 is used for thread start and stop, and the proxy function module 2022 is used for corresponding devices.

The interface device 202 is configured to provide an interface service to the outside.

The M3U8 playlist acquisition parsing device 203 is configured to obtain an M3U8 playlist according to the M3U8 playlist address, parse the M3U8 playlist, and obtain a TS file.

The rectifying device 204 is configured to demultiplex the obtained TS file, input a continuous time stamp, adjust the encoding parameters, and re-multiplex, to form a TS file sequence, and obtain the M3U8 straight according to the TS file sequence. Broadcast list, output TS file sequence, output M3U8 live list.

The instruction message parsing means 205 is for implementing loading, parsing and storing of instruction messages.

The queue management device 206 is configured to implement management of the TS file address queue and the TS file rectification queue. Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowcharts and/or block diagrams, and combinations of flow and/or blocks in the flowcharts and/or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the art that, Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and The spirit and scope of the embodiments of the present invention are departed. Thus, it is intended that the present invention cover the modifications and modifications of the embodiments of the invention.

Claims

Rights request

1. A background control method for video playback, which is applicable to the field of Internet television broadcast control, and is characterized in that it comprises the following steps:

A. After receiving the instruction message sent by the client, the server parses the instruction message, and obtains program list update information, program type information, program start timestamp information, and M3U8 playlist address information;

B, according to the program list update information, determine whether it is necessary to replace the program currently played by the client, and if so, go to step C;

C. Determine, according to the program type information, whether the program type information is a live broadcast program. If not, obtain an M3U8 playlist according to the M3U8 playlist address information, and go to step D. If it is a live broadcast program, convert the current time into a current time. Poke, according to the M3U8 playlist address information to obtain the M3U8 playlist corresponding to the current timestamp, and proceeds to step D;

D. Parsing the M3U8 playlist, obtaining the TS file address, obtaining the TS file and caching;

E. Decoding the TS file, adjusting parameters, rearranging, writing a continuous timestamp, and outputting a TS file sequence;

F. Create an M3U8 live broadcast list according to the TS file sequence, store the TS file sequence in a database, and output an M3U8 live broadcast list to the client.

2. The background control method for video playback according to claim 1, wherein the instruction message sent by the client is an XML file.

The background control method for video playback according to claim 1, wherein the step B further comprises the following steps:

This process stops if there is no need to replace the program currently being played by the client.

The background control method for video playback according to claim 1, wherein the step C further comprises the following steps:

Converting the current time into a current timestamp, determining whether the current timestamp is in the range of the start timestamp information of the program, and if the program is being broadcasted, corresponding to the current timestamp The M3U8 playlist address information obtains the M3U8 playlist, and re-acquires the updated M3U8 playlist according to the address of the M3U8 playlist corresponding to the current timestamp every preset time interval, if the current timestamp is not at the beginning and end timestamp of the program In the information range, the program stops or has not started to be broadcasted, and it is re-determined every preset time whether the current time stamp converted into the current time is in the program start end time stamp range.

5. A background control system for video playback, suitable for the field of Internet television broadcast control, characterized in that it comprises a central control device, an interface device, an M3U8 playlist acquisition and analysis device, a rectification device, an instruction message parsing device and a queue management device. The central control device is respectively connected to the interface device, the M3U8 playlist acquisition and analysis device, the rectification device and the instruction message analysis device, and the queue management device is respectively connected to the M3U8 playlist acquisition and analysis device and the rectification device;

The central control device is used for invoking between devices;

The instruction message parsing apparatus is configured to implement loading, parsing, and storing of an instruction message; and the queue management apparatus is configured to implement management of a TS file address queue and a TS file rectification queue.

6. The background control system for video playback according to claim 5, wherein the central control device further comprises a control function module and a proxy function module,

The control function module is used for starting and stopping a thread;

The proxy function module is used to correspond to other devices.